diff --git a/json/tests/draft3/optional/format.json b/json/tests/draft3/optional/format.json
index 3ca7319..fc86b03 100644
--- a/json/tests/draft3/optional/format.json
+++ b/json/tests/draft3/optional/format.json
@@ -77,11 +77,6 @@
                 "data": "http://foo.bar/?baz=qux#quux",
                 "valid": true
             },
-            {
-                "description": "a valid protocol-relative URI",
-                "data": "//foo.bar/?baz=qux#quux",
-                "valid": true
-            },
             {
                 "description": "an invalid URI",
                 "data": "\\\\WINDOWS\\fileshare",
diff --git a/json/tests/draft4/optional/format.json b/json/tests/draft4/optional/format.json
index aacfd11..53c5d25 100644
--- a/json/tests/draft4/optional/format.json
+++ b/json/tests/draft4/optional/format.json
@@ -29,11 +29,6 @@
                 "data": "http://foo.bar/?baz=qux#quux",
                 "valid": true
             },
-            {
-                "description": "a valid protocol-relative URI",
-                "data": "//foo.bar/?baz=qux#quux",
-                "valid": true
-            },
             {
                 "description": "an invalid URI",
                 "data": "\\\\WINDOWS\\fileshare",