1 files changed, 2 insertions, 2 deletions
diff --git a/server/src/com/vaadin/ui/declarative/DesignAttributeHandler.java b/server/src/com/vaadin/ui/declarative/DesignAttributeHandler.java
index 57a54cb9d8..215afd5041 100644
--- a/server/src/com/vaadin/ui/declarative/DesignAttributeHandler.java
+++ b/server/src/com/vaadin/ui/declarative/DesignAttributeHandler.java
@@ -154,7 +154,7 @@ public class DesignAttributeHandler implements Serializable {
         if (clazz == null) {
             throw new IllegalArgumentException("The clazz can not be null");
         }
-        if (cache.containsKey(clazz.getCanonicalName())) {
+        if (cache.containsKey(clazz)) {
             // NO-OP
             return;
         }
@@ -427,4 +427,4 @@ public class DesignAttributeHandler implements Serializable {
         }
     }
 
-}
-\ No newline at end of file
+}