diff --git a/libavcodec/aac/aacdec.c b/libavcodec/aac/aacdec.c
index c0850853b4..8d50ad6d09 100644
--- a/libavcodec/aac/aacdec.c
+++ b/libavcodec/aac/aacdec.c
@@ -1747,6 +1747,7 @@ int ff_aac_decode_ics(AACDecContext *ac, SingleChannelElement *sce,
 
     return 0;
 fail:
+    memset(sce->sfo, 0, sizeof(sce->sfo));
     tns->present = 0;
     return ret;
 }