diff --git a/core/modules/system/tests/modules/design_test/design_test.info b/core/modules/system/tests/modules/design_test/design_test.info
index ff7159ccc64e9c053ce977a03fdbc6a239527965..51224276a38e021ebf29ba8b24df25930a0c335a 100644
--- a/core/modules/system/tests/modules/design_test/design_test.info
+++ b/core/modules/system/tests/modules/design_test/design_test.info
@@ -3,4 +3,4 @@ description = Support module for design, markup, JavaScript, and CSS testing.
 package = Testing
 version = VERSION
 core = 8.x
-;hidden = TRUE
+hidden = TRUE