diff --git a/progmgr/wndproc.c b/progmgr/wndproc.c
index 0640fa2..14ca1da 100644
--- a/progmgr/wndproc.c
+++ b/progmgr/wndproc.c
@@ -232,7 +232,7 @@ VOID UpdateChecks(BOOL bVarMenu, UINT uSubMenu, UINT uID)
 \* * * */
 VOID UpdateWindowTitle(VOID)
 {
-	WCHAR szUsername[UNLEN + 1] = TEXT("");
+	WCHAR szUsername[UNLEN] = TEXT("");
 	DWORD dwUsernameLen = UNLEN;
 	WCHAR szWindowTitle[UNLEN + ARRAYSIZE(g_szAppTitle) + 4] = TEXT("");