diff --git a/source/quirc/identify.c b/source/quirc/identify.c
index 4756699..5a5881d 100644
--- a/source/quirc/identify.c
+++ b/source/quirc/identify.c
@@ -122,7 +122,7 @@ static void perspective_unmap(const double *c,
  * Span-based floodfill routine
  */
 
-#define FLOOD_FILL_MAX_DEPTH		4096
+#define FLOOD_FILL_MAX_DEPTH		128
 
 typedef void (*span_func_t)(void *user_data, int y, int left, int right);