1 files changed, 7 insertions, 1 deletions
diff --git a/catgy.c b/catgy.c
index b917005..3722abc 100644
--- a/catgy.c
+++ b/catgy.c
@@ -74,10 +74,16 @@ average(uint8_t dest[3], uint8_t src[9])
 static void
 blurge(struct image *img)
 {
+	struct image copy;
+	if (duplicate(&copy, img))
+		return;
+
 	for (int y = 0; y < img->h; y++)
 		for (int x = 1; x < img->w - 1; x++)
 			average(&img->data[x * 3 + y * img->w * 3],
-			        &img->data[x * 3 - 3 + y * img->w * 3]);
+			        &copy.data[x * 3 - 3 + y * img->w * 3]);
+
+	free(copy.data);
 }
 
 static int