diff --git a/engine/src/core/com/jme3/font/Letters.java b/engine/src/core/com/jme3/font/Letters.java
index eece896a6..bbb47a467 100644
--- a/engine/src/core/com/jme3/font/Letters.java
+++ b/engine/src/core/com/jme3/font/Letters.java
@@ -54,6 +54,8 @@ class Letters {
             Range end = ranges.getLast();
             setColor(end.start, plainText.length(), end.color);
         }
+        
+        invalidate();
     }
 
     LetterQuad getHead() {