diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 536b16a152..b1ec603eb6 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -3364,8 +3364,10 @@ static int mov_preroll_write_stbl_atoms(AVIOContext *pb, MOVTrack *track)
             if (roll_samples_remaining > 0)
                 distance = 0;
             /* Verify distance is a maximum of 32 (2.5ms) packets. */
-            if (distance > 32)
+            if (distance > 32) {
+                av_freep(&sgpd_entries);
                 return AVERROR_INVALIDDATA;
+            }
             if (i && distance == sgpd_entries[entries].roll_distance) {
                 sgpd_entries[entries].count++;
             } else {