diff --git a/src/flac/encode.c b/src/flac/encode.c
index ce21eaaa..1622e3d5 100644
--- a/src/flac/encode.c
+++ b/src/flac/encode.c
@@ -1635,6 +1635,12 @@ static void static_metadata_clear(static_metadata_t *m)
 static FLAC__bool static_metadata_append(static_metadata_t *m, FLAC__StreamMetadata *d, FLAC__bool needs_delete)
 {
 	void *x;
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+#ifdef __i386__
+/* Work around i386 ASAN bug */
+	if(0 == d) return true;
+#endif
+#endif
 	if(0 == (x = safe_realloc_nofree_muladd2_(m->metadata, sizeof(*m->metadata), /*times (*/m->num_metadata, /*+*/1/*)*/)))
 		return false;
 	m->metadata = (FLAC__StreamMetadata**)x;