1 files changed, 6 insertions, 1 deletions
diff --git a/src/newt/classes/com/jogamp/newt/macosx/MacWindow.java b/src/newt/classes/com/jogamp/newt/macosx/MacWindow.java
index 276843709..52d6fb0c7 100755
--- a/src/newt/classes/com/jogamp/newt/macosx/MacWindow.java
+++ b/src/newt/classes/com/jogamp/newt/macosx/MacWindow.java
@@ -216,7 +216,12 @@ public class MacWindow extends Window {
 
     public synchronized int lockSurface() throws NativeWindowException {
         nsViewLock.lock();
-        return super.lockSurface();
+        try {
+            return super.lockSurface();
+        } catch (RuntimeException re) {
+            nsViewLock.unlock();
+            throw re;
+        }
     }
 
     public void unlockSurface() {