diff --git a/fluent/migrate/context.py b/fluent/migrate/context.py
index b1fc94c6..a1cd9d59 100644
--- a/fluent/migrate/context.py
+++ b/fluent/migrate/context.py
@@ -14,11 +14,7 @@
 from fluent.syntax.parser import FluentParser
 from fluent.syntax.serializer import FluentSerializer
 from fluent.util import fold
-try:
-    from compare_locales.parser import getParser
-except ImportError:
-    def getParser(path):
-        raise RuntimeError('compare-locales required')
+from compare_locales.parser import getParser
 
 from .cldr import get_plural_categories
 from .transforms import Source
diff --git a/setup.py b/setup.py
index 560e971d..b0cb7471 100644
--- a/setup.py
+++ b/setup.py
@@ -21,5 +21,6 @@
       package_data={
           'fluent.migrate': ['cldr_data/*']
       },
-      tests_require=['six']
+      tests_require=['six'],
+      test_suite='tests.syntax'
 )
diff --git a/tests/migrate/test_concat.py b/tests/migrate/test_concat.py
index 6d2f35eb..1dbbb938 100644
--- a/tests/migrate/test_concat.py
+++ b/tests/migrate/test_concat.py
@@ -2,13 +2,9 @@
 from __future__ import unicode_literals
 
 import unittest
+from compare_locales.parser import PropertiesParser, DTDParser
 
 import fluent.syntax.ast as FTL
-try:
-    from compare_locales.parser import PropertiesParser, DTDParser
-except ImportError:
-    DTDParser = PropertiesParser = None
-
 from fluent.migrate.util import parse, ftl_message_to_json
 from fluent.migrate.helpers import EXTERNAL_ARGUMENT, MESSAGE_REFERENCE
 from fluent.migrate.transforms import evaluate, CONCAT, COPY, REPLACE
@@ -23,7 +19,6 @@ def get_source(self, path, key):
         return self.strings.get(key, None).val
 
 
-@unittest.skipUnless(PropertiesParser, 'compare-locales required')
 class TestConcatCopy(MockContext):
     def setUp(self):
         self.strings = parse(PropertiesParser, '''
@@ -120,7 +115,6 @@ def test_concat_whitespace_end(self):
         )
 
 
-@unittest.skipUnless(DTDParser, 'compare-locales required')
 class TestConcatLiteral(MockContext):
     def setUp(self):
         self.strings = parse(DTDParser, '''
@@ -149,7 +143,6 @@ def test_concat_literal(self):
         )
 
 
-@unittest.skipUnless(DTDParser, 'compare-locales required')
 class TestConcatInterpolate(MockContext):
     def setUp(self):
         self.strings = parse(DTDParser, '''
@@ -192,7 +185,6 @@ def test_concat_expression(self):
         )
 
 
-@unittest.skipUnless(DTDParser, 'compare-locales required')
 class TestConcatReplace(MockContext):
     def setUp(self):
         self.strings = parse(DTDParser, '''
diff --git a/tests/migrate/test_context.py b/tests/migrate/test_context.py
index 56f0f50d..50ed06f5 100644
--- a/tests/migrate/test_context.py
+++ b/tests/migrate/test_context.py
@@ -4,14 +4,9 @@
 import os
 import logging
 import unittest
-
-try:
-    import compare_locales
-except ImportError:
-    compare_locales = None
+import compare_locales
 
 import fluent.syntax.ast as FTL
-
 from fluent.migrate.errors import (
     EmptyLocalizationError, NotSupportedError, UnreadableReferenceError)
 from fluent.migrate.util import ftl, ftl_resource_to_json, to_json
@@ -24,7 +19,6 @@ def here(*parts):
     return os.path.join(dirname, *parts)
 
 
-@unittest.skipUnless(compare_locales, 'compare-locales requried')
 class TestMergeContext(unittest.TestCase):
     def setUp(self):
         self.ctx = MergeContext(
@@ -250,7 +244,6 @@ def test_missing_reference_file(self):
             self.ctx.add_transforms('some.ftl', 'missing.ftl', [])
 
 
-@unittest.skipUnless(compare_locales, 'compare-locales requried')
 class TestMissingLocalizationFiles(unittest.TestCase):
     def setUp(self):
         # Silence all logging.
@@ -313,7 +306,6 @@ def test_all_files_missing(self):
             ])
 
 
-@unittest.skipUnless(compare_locales, 'compare-locales requried')
 class TestMissingLocalizationStrings(unittest.TestCase):
     maxDiff = None
 
@@ -528,7 +520,6 @@ def test_missing_string_in_one_of_attributes(self):
         )
 
 
-@unittest.skipUnless(compare_locales, 'compare-locales requried')
 class TestExistingTarget(unittest.TestCase):
     maxDiff = None
 
diff --git a/tests/migrate/test_context_real_examples.py b/tests/migrate/test_context_real_examples.py
index 15868262..deaf9cd9 100644
--- a/tests/migrate/test_context_real_examples.py
+++ b/tests/migrate/test_context_real_examples.py
@@ -3,14 +3,9 @@
 
 import os
 import unittest
-
-try:
-    import compare_locales
-except ImportError:
-    compare_locales = None
+import compare_locales
 
 import fluent.syntax.ast as FTL
-
 from fluent.migrate.util import ftl_resource_to_json, to_json
 from fluent.migrate.context import MergeContext
 from fluent.migrate.helpers import EXTERNAL_ARGUMENT, MESSAGE_REFERENCE
@@ -24,7 +19,6 @@ def here(*parts):
     return os.path.join(dirname, *parts)
 
 
-@unittest.skipUnless(compare_locales, 'compare-locales requried')
 class TestMergeAboutDownloads(unittest.TestCase):
     def setUp(self):
         self.ctx = MergeContext(
@@ -279,7 +273,6 @@ def test_merge_context_some_messages(self):
         )
 
 
-@unittest.skipUnless(compare_locales, 'compare-locales requried')
 class TestMergeAboutDialog(unittest.TestCase):
     maxDiff = None
 
diff --git a/tests/migrate/test_copy.py b/tests/migrate/test_copy.py
index 6d0241aa..5def8a39 100644
--- a/tests/migrate/test_copy.py
+++ b/tests/migrate/test_copy.py
@@ -2,13 +2,9 @@
 from __future__ import unicode_literals
 
 import unittest
+from compare_locales.parser import PropertiesParser, DTDParser
 
 import fluent.syntax.ast as FTL
-try:
-    from compare_locales.parser import PropertiesParser, DTDParser
-except ImportError:
-    PropertiesParser = DTDParser = None
-
 from fluent.migrate.util import parse, ftl_message_to_json
 from fluent.migrate.transforms import evaluate, COPY
 
@@ -20,7 +16,6 @@ def get_source(self, path, key):
         return self.strings.get(key, None).val
 
 
-@unittest.skipUnless(PropertiesParser, 'compare-locales required')
 class TestCopy(MockContext):
     def setUp(self):
         self.strings = parse(PropertiesParser, '''
@@ -71,7 +66,6 @@ def test_copy_escape_unicode_end(self):
         )
 
 
-@unittest.skipUnless(DTDParser, 'compare-locales required')
 class TestCopyAttributes(MockContext):
     def setUp(self):
         self.strings = parse(DTDParser, '''
diff --git a/tests/migrate/test_merge.py b/tests/migrate/test_merge.py
index 9178326e..fbd40398 100644
--- a/tests/migrate/test_merge.py
+++ b/tests/migrate/test_merge.py
@@ -2,14 +2,10 @@
 from __future__ import unicode_literals
 
 import unittest
+from compare_locales.parser import PropertiesParser, DTDParser
 
 import fluent.syntax.ast as FTL
 from fluent.syntax.parser import FluentParser
-try:
-    from compare_locales.parser import PropertiesParser, DTDParser
-except ImportError:
-    PropertiesParser = DTDParser = None
-
 from fluent.migrate.util import parse, ftl, ftl_resource_to_json
 from fluent.migrate.merge import merge_resource
 from fluent.migrate.transforms import COPY
@@ -25,8 +21,6 @@ def get_source(self, path, key):
             return translation.val
 
 
-@unittest.skipUnless(PropertiesParser and DTDParser,
-                     'compare-locales required')
 class TestMergeMessages(MockContext):
     maxDiff = None
 
@@ -129,8 +123,6 @@ def test_merge_three_way(self):
         )
 
 
-@unittest.skipUnless(PropertiesParser and DTDParser,
-                     'compare-locales required')
 class TestMergeAllEntries(MockContext):
     def setUp(self):
         self.en_us_ftl = parse(FluentParser, ftl('''
@@ -245,8 +237,6 @@ def test_merge_three_way(self):
         )
 
 
-@unittest.skipUnless(PropertiesParser and DTDParser,
-                     'compare-locales required')
 class TestMergeSubset(MockContext):
     def setUp(self):
         self.en_us_ftl = parse(FluentParser, ftl('''
diff --git a/tests/migrate/test_plural.py b/tests/migrate/test_plural.py
index 044dd074..159ab7e7 100644
--- a/tests/migrate/test_plural.py
+++ b/tests/migrate/test_plural.py
@@ -2,13 +2,9 @@
 from __future__ import unicode_literals
 
 import unittest
+from compare_locales.parser import PropertiesParser
 
 import fluent.syntax.ast as FTL
-try:
-    from compare_locales.parser import PropertiesParser
-except ImportError:
-    PropertiesParser = None
-
 from fluent.migrate.util import parse, ftl_message_to_json
 from fluent.migrate.helpers import EXTERNAL_ARGUMENT
 from fluent.migrate.transforms import evaluate, PLURALS, REPLACE_IN_TEXT
@@ -25,7 +21,6 @@ def get_source(self, path, key):
         return self.strings.get(key, None).val
 
 
-@unittest.skipUnless(PropertiesParser, 'compare-locales required')
 class TestPlural(MockContext):
     def setUp(self):
         self.strings = parse(PropertiesParser, '''
@@ -79,7 +74,6 @@ def test_plural_too_many_variants(self):
         )
 
 
-@unittest.skipUnless(PropertiesParser, 'compare-locales required')
 class TestPluralLiteral(MockContext):
     def setUp(self):
         self.strings = parse(PropertiesParser, '''
@@ -108,7 +102,6 @@ def test_plural_literal(self):
         )
 
 
-@unittest.skipUnless(PropertiesParser, 'compare-locales required')
 class TestPluralReplace(MockContext):
     def setUp(self):
         self.strings = parse(PropertiesParser, '''
@@ -143,7 +136,6 @@ def test_plural_replace(self):
         )
 
 
-@unittest.skipUnless(PropertiesParser, 'compare-locales required')
 class TestOneCategory(MockContext):
     # Plural categories corresponding to Turkish (tr).
     plural_categories = ('other',)
@@ -177,7 +169,6 @@ def test_no_select_expression(self):
         )
 
 
-@unittest.skipUnless(PropertiesParser, 'compare-locales required')
 class TestManyCategories(MockContext):
     # Plural categories corresponding to Polish (pl).
     plural_categories = ('one', 'few', 'many', 'other')
diff --git a/tests/migrate/test_replace.py b/tests/migrate/test_replace.py
index 7bc01879..b92b9330 100644
--- a/tests/migrate/test_replace.py
+++ b/tests/migrate/test_replace.py
@@ -2,13 +2,9 @@
 from __future__ import unicode_literals
 
 import unittest
+from compare_locales.parser import PropertiesParser
 
 import fluent.syntax.ast as FTL
-try:
-    from compare_locales.parser import PropertiesParser
-except ImportError:
-    PropertiesParser = None
-
 from fluent.migrate.util import parse, ftl_message_to_json
 from fluent.migrate.helpers import EXTERNAL_ARGUMENT
 from fluent.migrate.transforms import evaluate, REPLACE
@@ -23,7 +19,6 @@ def get_source(self, path, key):
         return self.strings.get(key, None).val
 
 
-@unittest.skipUnless(PropertiesParser, 'compare-locales required')
 class TestReplace(MockContext):
     def setUp(self):
         self.strings = parse(PropertiesParser, '''
diff --git a/tests/migrate/test_source.py b/tests/migrate/test_source.py
index d3192548..3d2580a6 100644
--- a/tests/migrate/test_source.py
+++ b/tests/migrate/test_source.py
@@ -2,14 +2,9 @@
 from __future__ import unicode_literals
 
 import unittest
-
-try:
-    from compare_locales.parser import PropertiesParser, DTDParser
-except ImportError:
-    PropertiesParser = DTDParser = None
+from compare_locales.parser import PropertiesParser, DTDParser
 
 import fluent.syntax.ast as FTL
-
 from fluent.migrate.errors import NotSupportedError
 from fluent.migrate.transforms import Source, COPY, PLURALS, REPLACE
 from fluent.migrate.util import parse
@@ -63,7 +58,6 @@ def get_source(self, _path, key):
         return self.strings[key].val
 
 
-@unittest.skipUnless(PropertiesParser, 'compare-locales required')
 class TestProperties(MockContext):
     def setUp(self):
         self.strings = parse(PropertiesParser, '''
@@ -97,7 +91,6 @@ def test_html_entity(self):
         self.assertEqual(source(self), '<⇧⌘K>')
 
 
-@unittest.skipUnless(DTDParser, 'compare-locales required')
 class TestDTD(MockContext):
     def setUp(self):
         self.strings = parse(DTDParser, '''
diff --git a/tox.ini b/tox.ini
index 87081acb..78ebd64a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,8 +5,13 @@ skipsdist=True
 [testenv]
 setenv =
     PYTHONPATH = {toxinidir}
+deps = six
+commands = python -m unittest discover -s tests/syntax
+
+[testenv:py27-cl]
 deps =
     six
-    cl: compare-locales
-
-commands=python -m unittest discover
+    compare-locales
+commands =
+    python -m unittest discover -s tests/syntax
+    python -m unittest discover -s tests/migrate