diff --git a/java/awt/dnd/DropTargetDragEvent.java b/java/awt/dnd/DropTargetDragEvent.java
index 21c9e2b35c..db06c237d1 100644
--- a/java/awt/dnd/DropTargetDragEvent.java
+++ b/java/awt/dnd/DropTargetDragEvent.java
@@ -90,7 +90,7 @@ public DropTargetDragEvent (DropTargetContext context, Point location,
                          | DnDConstants.ACTION_LINK
                          | DnDConstants.ACTION_REFERENCE;
 
-    if (~(srcActions ^ srcActionsMask) != 0)
+    if ((srcActions & ~srcActionsMask) != 0)
       throw new IllegalArgumentException ();
 
     this.dropAction = dropAction;
diff --git a/java/awt/dnd/DropTargetDropEvent.java b/java/awt/dnd/DropTargetDropEvent.java
index 333f8c6cc5..9944ec9558 100644
--- a/java/awt/dnd/DropTargetDropEvent.java
+++ b/java/awt/dnd/DropTargetDropEvent.java
@@ -104,7 +104,7 @@ public DropTargetDropEvent(DropTargetContext dtc, Point location,
                       | DnDConstants.ACTION_LINK
                       | DnDConstants.ACTION_REFERENCE;
 
-    if (~(actions ^ actionsMask) != 0)
+    if ((actions & ~actionsMask) != 0)
       throw new IllegalArgumentException();
 
     this.dropAction = dropAction;