diff --git a/iconv/gconv_cache.c b/iconv/gconv_cache.c
index 9a8a20816c..716c384de2 100644
--- a/iconv/gconv_cache.c
+++ b/iconv/gconv_cache.c
@@ -467,7 +467,7 @@ libc_freeres_fn (free_mem)
   if (cache_malloced)
     free (gconv_cache);
 #ifdef _POSIX_MAPPED_FILES
-  else
+  else if (gconv_cache != NULL)
     __munmap (gconv_cache, cache_size);
 #endif
 }