--- a/dwt/internal/Lock.d	Fri Jan 11 11:21:52 2008 +0100
+++ b/dwt/internal/Lock.d	Fri Jan 11 14:31:37 2008 +0100
@@ -23,7 +23,7 @@
     Mutex mutex;
     Condition cond;
 
-    public this(){
+    public this() {
         mutex = new Mutex;
         cond = new Condition(mutex);
     }
@@ -37,7 +37,7 @@
 public int lock() {
 	synchronized (mutex) {
 		Thread current = Thread.getThis();
-		if (owner != current) {
+		if (owner !is current) {
 			waitCount++;
 			while (count > 0) {
 				try {
@@ -60,8 +60,8 @@
 public void unlock() {
 	synchronized (mutex) {
 		Thread current = Thread.getThis();
-		if (owner == current) {
-			if (--count == 0) {
+		if (owner is current) {
+			if (--count is 0) {
 				owner = null;
 				if (waitCount > 0) cond.notifyAll();
 			}