diff --git a/jme3-lwjgl/src/main/java/com/jme3/system/lwjgl/LwjglOffscreenBuffer.java b/jme3-lwjgl/src/main/java/com/jme3/system/lwjgl/LwjglOffscreenBuffer.java
index b06db1b29..ddfb8b62b 100644
--- a/jme3-lwjgl/src/main/java/com/jme3/system/lwjgl/LwjglOffscreenBuffer.java
+++ b/jme3-lwjgl/src/main/java/com/jme3/system/lwjgl/LwjglOffscreenBuffer.java
@@ -123,7 +123,7 @@ public class LwjglOffscreenBuffer extends LwjglContext implements Runnable {
         }
 
         listener.update();
-        checkGLError();
+        assert checkGLError();
 
         renderer.postFrame();