diff --git a/libavcodec/wma.c b/libavcodec/wma.c
index e704223f1e..5888363ac9 100644
--- a/libavcodec/wma.c
+++ b/libavcodec/wma.c
@@ -385,9 +385,9 @@ 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]);
     }
 
 #if FF_API_OLD_ENCODE_AUDIO