diff --git a/libavfilter/trim.c b/libavfilter/trim.c
index 04e82dab10..468dc03ca1 100644
--- a/libavfilter/trim.c
+++ b/libavfilter/trim.c
@@ -244,7 +244,7 @@ static int atrim_filter_frame(AVFilterLink *inlink, AVFrame *frame)
 {
     AVFilterContext *ctx = inlink->dst;
     TrimContext       *s = ctx->priv;
-    int64_t start_sample, end_sample = frame->nb_samples;
+    int64_t start_sample, end_sample;
     int64_t pts;
     int drop;