diff --git a/libavformat/hls.c b/libavformat/hls.c
index 0b55507790..1318d3f6e7 100644
--- a/libavformat/hls.c
+++ b/libavformat/hls.c
@@ -232,6 +232,7 @@ 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]);
     }