diff --git a/libavfilter/avf_avectorscope.c b/libavfilter/avf_avectorscope.c
index 725ac8bbda..75e0ee5e2a 100644
--- a/libavfilter/avf_avectorscope.c
+++ b/libavfilter/avf_avectorscope.c
@@ -331,7 +331,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
             src[1] = -src[1];
 
         if (s->swap)
-            FFSWAP(float, src[0], src[1]);;
+            FFSWAP(float, src[0], src[1]);
 
         if (s->mode == LISSAJOUS) {
             x = ((src[1] - src[0]) * zoom / 2 + 1) * hw;