diff --git a/core/modules/system/tests/modules/css_disable_transitions_test/css/disable_transitions.theme.css b/core/modules/system/tests/modules/css_disable_transitions_test/css/disable_transitions.theme.css
index 55221fa99bd..ff5df76ba18 100644
--- a/core/modules/system/tests/modules/css_disable_transitions_test/css/disable_transitions.theme.css
+++ b/core/modules/system/tests/modules/css_disable_transitions_test/css/disable_transitions.theme.css
@@ -13,12 +13,6 @@
   -ms-transition-property: none !important;
   -webkit-transition-property: none !important;
   transition-property: none !important;
-  /* CSS transforms. */
-  -o-transform: none !important;
-  -moz-transform: none !important;
-  -ms-transform: none !important;
-  -webkit-transform: none !important;
-  transform: none !important;
   /* CSS animations. */
   -webkit-animation: none !important;
   -moz-animation: none !important;