diff --git a/mouse.h b/mouse.h
index e7b8048..32dcfda 100644
--- a/mouse.h
+++ b/mouse.h
@@ -13,8 +13,10 @@
  */
 static MouseShortcut mshortcuts[] = {
 	/* mask                 button   function        argument       release */
-	{ ANY,                  Button4, kscrollup,      {.i = 1},		0, -1 },
-	{ ANY,                  Button5, kscrolldown,    {.i = 1},		0, -1 },
+	{ NONE,                 Button4, kscrollup,      {.i = 1},		0, -1 },
+	{ NONE,                 Button5, kscrolldown,    {.i = 1},		0, -1 },
+	{ CONTROL,              Button4, zoom,           {.f = 1},		0, -1 },
+	{ CONTROL,              Button5, zoom,           {.f = -1},		0, -1 },
 	{ ANY,				    Button3, selpaste,       {.i = 0},      1     },
 	{ SHIFT,	            Button4, ttysend,        {.s = "\033[5;2~"    } },
 	{ ANY,				    Button4, ttysend,        {.s = "\031"         } },