Index: src/OFDataArray.m
==================================================================
--- src/OFDataArray.m
+++ src/OFDataArray.m
@@ -429,11 +429,11 @@
 }
 
 - (void)addItems: (const void*)items
 	   count: (size_t)count
 {
-	if (count > SIZE_MAX - count)
+	if (count > SIZE_MAX - _count)
 		@throw [OFOutOfRangeException exception];
 
 	if (_count + count > _capacity) {
 		_items = [self resizeMemory: _items
 				       size: _itemSize