diff --git a/dlls/user32/class.c b/dlls/user32/class.c
index 91409e28a97..8b5060a628b 100644
--- a/dlls/user32/class.c
+++ b/dlls/user32/class.c
@@ -136,6 +136,7 @@ static BOOL set_server_info( HWND hwnd, INT offset, LONG_PTR newval, UINT size )
         case GCW_ATOM:
             req->flags = SET_CLASS_ATOM;
             req->atom = LOWORD(newval);
+            break;
         case GCL_STYLE:
             req->flags = SET_CLASS_STYLE;
             req->style = newval;