diff --git a/libavformat/hls.c b/libavformat/hls.c
index 3dc7bd3930..e622425e80 100644
--- a/libavformat/hls.c
+++ b/libavformat/hls.c
@@ -250,6 +250,7 @@ static void free_init_section_list(struct playlist *pls)
 {
     int i;
     for (i = 0; i < pls->n_init_sections; i++) {
+        av_freep(&pls->init_sections[i]->key);
         av_freep(&pls->init_sections[i]->url);
         av_freep(&pls->init_sections[i]);
     }