diff --git a/libavfilter/avf_aphasemeter.c b/libavfilter/avf_aphasemeter.c
index fb5c1d4cdcd0da11b225339d5a2cd1e8f774f6d1..bfd77861ec8c7eea5a8a42248e2f4dc2d314ef3a 100644
--- a/libavfilter/avf_aphasemeter.c
+++ b/libavfilter/avf_aphasemeter.c
@@ -222,8 +222,11 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
 static av_cold void uninit(AVFilterContext *ctx)
 {
     AudioPhaseMeterContext *s = ctx->priv;
+    int i;
 
     av_frame_free(&s->out);
+    for (i = 0; i < ctx->nb_outputs; i++)
+        av_freep(&ctx->output_pads[i].name);
 }
 
 static av_cold int init(AVFilterContext *ctx)