diff --git a/sky/sdk/BUILD.gn b/sky/sdk/BUILD.gn
index 2577abfcc1bd5..9e896d6d478db 100644
--- a/sky/sdk/BUILD.gn
+++ b/sky/sdk/BUILD.gn
@@ -120,7 +120,7 @@ dart_pkg("sky") {
   sdk_ext_mappings = [
     "dart:sky,dart_sky.dart",
     "dart:sky.internals,sky_internals.dart",
-    "dart:sky_builtin_natvies,builtin_natives.dart",
+    "dart:sky_builtin_natives,builtin_natives.dart",
   ]
 }
 
diff --git a/sky/tools/setup_dart_analyzer b/sky/tools/setup_dart_analyzer
index 65e69cc5ac263..8062ea9652849 100755
--- a/sky/tools/setup_dart_analyzer
+++ b/sky/tools/setup_dart_analyzer
@@ -20,7 +20,7 @@ SDK_EXT = os.path.join(SKY_SDK_DIR, 'lib', '_sdkext')
 SDK_EXT_TEMPLATE = '''{
   "dart:sky": "%(build_dir)s/gen/dart-pkg/sky/sdk_ext/dart_sky.dart",
   "dart:sky.internals": "%(build_dir)s/gen/dart-pkg/sky/sdk_ext/sky_internals.dart",
-  "dart:sky_builtin_natvies": "%(build_dir)s/gen/dart-pkg/sky/sdk_ext/builtin_natives.dart"
+  "dart:sky_builtin_natives": "%(build_dir)s/gen/dart-pkg/sky/sdk_ext/builtin_natives.dart"
 }'''
 
 def version_for_pubspec(pubspec_path):