1 files changed, 1 insertions, 1 deletions
diff --git a/sql/discover.h b/sql/discover.h
index 1775f5d6551..750c2944ede 100644
--- a/sql/discover.h
+++ b/sql/discover.h
@@ -28,7 +28,7 @@ int writefile(const char *path, const char *db, const char *table,
 inline void deletefrm(const char *path)
 {
   char frm_name[FN_REFLEN];
-  strxmov(frm_name, path, reg_ext, NullS);
+  strxnmov(frm_name, sizeof(frm_name)-1, path, reg_ext, NullS);
   mysql_file_delete(key_file_frm, frm_name, MYF(0));
 }