1 files changed, 9 insertions, 0 deletions
diff --git a/src/classes/com/sun/opengl/impl/x11/X11OffscreenGLContext.java b/src/classes/com/sun/opengl/impl/x11/X11OffscreenGLContext.java
index e1c8eb3d1..132573f7b 100644
--- a/src/classes/com/sun/opengl/impl/x11/X11OffscreenGLContext.java
+++ b/src/classes/com/sun/opengl/impl/x11/X11OffscreenGLContext.java
@@ -68,6 +68,15 @@ public class X11OffscreenGLContext extends X11GLContext {
     return true;
   }
 
+  protected int makeCurrentImpl() throws GLException {
+    lockToolkit();
+    try {
+      return super.makeCurrentImpl();
+    } finally {
+      unlockToolkit();
+    }
+  }
+
   protected void create() {
     createContext(false);
   }