diff --git a/src/Corrade/Utility/Debug.h b/src/Corrade/Utility/Debug.h
index 4cf3a79fc..09fff896b 100644
--- a/src/Corrade/Utility/Debug.h
+++ b/src/Corrade/Utility/Debug.h
@@ -181,8 +181,8 @@ class CORRADE_UTILITY_EXPORT Debug {
              */
             Color = 1 << 4
 
-            /* When adding values, don't forget to adapt PublicFlagMask in
-               Debug.cpp */
+            /* When adding values, don't forget to adapt InternalFlag as well
+               and update PublicFlagMask in Debug.cpp */
         };
 
         /**