diff --git a/src/mouse.c b/src/mouse.c
index c9e96c9..aa06e6c 100644
--- a/src/mouse.c
+++ b/src/mouse.c
@@ -2162,7 +2162,7 @@
 do_mousescroll_horiz(long_u leftcol)
 {
     if (curwin->w_p_wrap)
-	return FALSE;  // no wrapping, no scrolling
+	return FALSE;  // no horizontal scrolling when wrapping
 
     if (curwin->w_leftcol == (colnr_T)leftcol)
 	return FALSE;  // already there