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-rw-r--r--libavfilter/vf_alphamerge.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vf_alphamerge.c b/libavfilter/vf_alphamerge.c
index 69532d61c3..9b01db6605 100644
--- a/libavfilter/vf_alphamerge.c
+++ b/libavfilter/vf_alphamerge.c
@@ -188,7 +188,7 @@ static const AVOption alphamerge_options[] = {
FRAMESYNC_DEFINE_CLASS(alphamerge, AlphaMergeContext, fs);
-AVFilter ff_vf_alphamerge = {
+const AVFilter ff_vf_alphamerge = {
.name = "alphamerge",
.description = NULL_IF_CONFIG_SMALL("Copy the luma value of the second "
"input into the alpha channel of the first input."),