diff --git a/x.c b/x.c
index b798182..526e3f0 100644
--- a/x.c
+++ b/x.c
@@ -405,7 +405,9 @@ mousereport(XEvent *e)
 			button = 3;
 		} else {
 			button -= Button1;
-			if (button >= 3)
+			if (button >= 7)
+				button += 128 - 7;
+			else if (button >= 3)
 				button += 64 - 3;
 		}
 		if (e->xbutton.type == ButtonPress) {