diff --git a/test/resources.rc b/test/resources.rc
index 6b46730d..71d1d573 100644
--- a/test/resources.rc
+++ b/test/resources.rc
@@ -5,6 +5,7 @@
 
 // this is the Common Controls 6 manifest
 // 1 is the value of CREATEPROCESS_MANIFEST_RESOURCE_ID and 24 is the value of RT_MANIFEST; we use it directly to avoid needing to share winapi.h with the tests and examples
+// we also don't define Common Controls v6 in the shared manifest to ensure that the isolation awareness actually does work
 #ifndef uiStatic
 1 24 "test.manifest"
 #else