diff --git a/libavcodec/wma.c b/libavcodec/wma.c
index 0122ee6fe3..b6d6351acf 100644
--- a/libavcodec/wma.c
+++ b/libavcodec/wma.c
@@ -386,9 +386,9 @@ int ff_wma_end(AVCodecContext *avctx)
     }
     for (i = 0; i < 2; i++) {
         ff_free_vlc(&s->coef_vlc[i]);
-        av_free(s->run_table[i]);
-        av_free(s->level_table[i]);
-        av_free(s->int_table[i]);
+        av_freep(&s->run_table[i]);
+        av_freep(&s->level_table[i]);
+        av_freep(&s->int_table[i]);
     }
 
     return 0;