diff --git a/src/java.desktop/unix/native/libawt_xawt/awt/awt_GraphicsEnv.c b/src/java.desktop/unix/native/libawt_xawt/awt/awt_GraphicsEnv.c
index 6d7d3125b94..c014ca5f582 100644
--- a/src/java.desktop/unix/native/libawt_xawt/awt/awt_GraphicsEnv.c
+++ b/src/java.desktop/unix/native/libawt_xawt/awt/awt_GraphicsEnv.c
@@ -1429,6 +1429,9 @@ Java_sun_awt_X11GraphicsDevice_getDoubleBufferVisuals(JNIEnv *env,
             break;
         }
     }
+    AWT_LOCK();
+    XdbeFreeVisualInfo(visScreenInfo);
+    AWT_UNLOCK();
 }
 
 /*