diff --git a/src/imgio.c b/src/imgio.c
index 151315f..ca77ac8 100644
--- a/src/imgio.c
+++ b/src/imgio.c
@@ -68,13 +68,13 @@ ppm_save(const unsigned int* buf, const PPM img)
 {
 	if (!buf)
 	{
-		return 0;
+		return 10;
 	}
 	unsigned char red, green, blue;
 	unsigned char* dst_buf = malloc(img.len * 3);
 	if (!dst_buf)
 	{
-		return 0;
+		return 10;
 	}
 	printf("Starting encode...\n");
 	FILE* fptr;