1 files changed, 2 insertions, 2 deletions
diff --git a/tikzit/src/common/ColorRGB.m b/tikzit/src/common/ColorRGB.m
index b6fc2e3..673a88d 100644
--- a/tikzit/src/common/ColorRGB.m
+++ b/tikzit/src/common/ColorRGB.m
@@ -263,8 +263,8 @@ static NSMapTable *colorHash = nil;
 	return dr*dr + dg*dg + db*db;
 }
 
-- (id)copy {
-	ColorRGB *col = [[ColorRGB alloc] initWithRed:red green:green blue:blue];
+- (id)copyWithZone:(NSZone*)zone {
+	ColorRGB *col = [[ColorRGB allocWithZone:zone] initWithRed:red green:green blue:blue];
 	return col;
 }