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-rw-r--r--libmpcodecs/vf_phase.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libmpcodecs/vf_phase.c b/libmpcodecs/vf_phase.c
index f8a1163f36..0014496632 100644
--- a/libmpcodecs/vf_phase.c
+++ b/libmpcodecs/vf_phase.c
@@ -59,7 +59,7 @@ static void do_plane(unsigned char *to, unsigned char *from,
* (the result is actually multiplied by 25)
*/
-#define diff(a, as, b, bs) (t=(*a-b[bs]<<2)+a[as<<1]-b[-bs], t*t)
+#define diff(a, as, b, bs) (t=((*a-b[bs])<<2)+a[as<<1]-b[-bs], t*t)
/*
* Find which field combination has the smallest average squared difference