diff --git a/tests/draft3/optional/format.json b/tests/draft3/optional/format.json
index 3ca7319d..d53c7530 100644
--- a/tests/draft3/optional/format.json
+++ b/tests/draft3/optional/format.json
@@ -78,9 +78,9 @@
                 "valid": true
             },
             {
-                "description": "a valid protocol-relative URI",
+                "description": "an invalid protocol-relative URI Reference",
                 "data": "//foo.bar/?baz=qux#quux",
-                "valid": true
+                "valid": false
             },
             {
                 "description": "an invalid URI",
diff --git a/tests/draft4/optional/format.json b/tests/draft4/optional/format.json
index aacfd119..80373bdf 100644
--- a/tests/draft4/optional/format.json
+++ b/tests/draft4/optional/format.json
@@ -30,9 +30,9 @@
                 "valid": true
             },
             {
-                "description": "a valid protocol-relative URI",
+                "description": "an invalid protocol-relative URI Reference",
                 "data": "//foo.bar/?baz=qux#quux",
-                "valid": true
+                "valid": false
             },
             {
                 "description": "an invalid URI",
diff --git a/tests/draft6/optional/format.json b/tests/draft6/optional/format.json
index aacfd119..80373bdf 100644
--- a/tests/draft6/optional/format.json
+++ b/tests/draft6/optional/format.json
@@ -30,9 +30,9 @@
                 "valid": true
             },
             {
-                "description": "a valid protocol-relative URI",
+                "description": "an invalid protocol-relative URI Reference",
                 "data": "//foo.bar/?baz=qux#quux",
-                "valid": true
+                "valid": false
             },
             {
                 "description": "an invalid URI",