diff --git a/libavfilter/af_join.c b/libavfilter/af_join.c
index 74ecce052d..f8af0a1804 100644
--- a/libavfilter/af_join.c
+++ b/libavfilter/af_join.c
@@ -232,7 +232,10 @@ static av_cold int join_init(AVFilterContext *ctx)
 
         pad.needs_fifo = 1;
 
-        ff_insert_inpad(ctx, i, &pad);
+        if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
+            av_freep(&pad.name);
+            return ret;
+        }
     }
 
     return 0;