diff --git a/src/quickfix.c b/src/quickfix.c
index 51f96dc..b607170 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -2040,7 +2040,7 @@
 	if (cmdmod.tab != 0)
 	    wp = NULL;
 	else
-	    for (wp = firstwin; wp != NULL; wp = wp->w_next)
+	    FOR_ALL_WINDOWS(wp)
 		if (wp->w_buffer != NULL && wp->w_buffer->b_help)
 		    break;
 	if (wp != NULL && wp->w_buffer->b_nwindows > 0)