diff --git a/ChangeLog b/ChangeLog
index 4c4f66c85..a8075e0e5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2004-06-03  David Ayers  <d.ayers@inode.at>
+
+	* Source/GSSet.m (-[GSMutableSet unionSet:]): Remove redundant
+	test.
+	
 2004-06-03  Adam Fedor  <fedor@gnu.org>
 
 	* Source/cifframe.h: Move ffi.h include to fix compile problem on
diff --git a/Source/GSSet.m b/Source/GSSet.m
index 838874e37..588f816e3 100644
--- a/Source/GSSet.m
+++ b/Source/GSSet.m
@@ -670,11 +670,6 @@ static Class	mutableSetClass;
 	    {
 	      GSIMapNode node;
 
-	      if (anObject == nil)
-		{
-		  [NSException raise: NSInvalidArgumentException
-			      format: @"Tried to add nil to set"];
-		}
 	      node = GSIMapNodeForKey(&map, (GSIMapKey)anObject);
 	      if (node == 0)
 		{