diff --git a/jdk/src/solaris/classes/sun/awt/X11/XToolkit.java b/jdk/src/solaris/classes/sun/awt/X11/XToolkit.java
index fb6f1180c28b4d9c8c16092b978a17e179cb5255..8676c6affb97652058ddb23dfce032953a864313 100644
--- a/jdk/src/solaris/classes/sun/awt/X11/XToolkit.java
+++ b/jdk/src/solaris/classes/sun/awt/X11/XToolkit.java
@@ -1449,7 +1449,7 @@ public final class XToolkit extends UNIXToolkit implements Runnable {
      * (which is assigned to the virtual pointer) reports the maximum
      * capabilities of the mouse pointer (i.e. 32 physical buttons).
      */
-    private native synchronized int getNumberOfButtonsImpl();
+    private native int getNumberOfButtonsImpl();
 
     @Override
     public int getNumberOfButtons(){