diff --git a/config.def.h b/config.def.h
index c223706..f5626f6 100644
--- a/config.def.h
+++ b/config.def.h
@@ -174,10 +174,11 @@ static uint forcemousemod = ShiftMask;
  * Internal mouse shortcuts.
  * Beware that overloading Button1 will disable the selection.
  */
+const unsigned int mousescrollincrement = 1;
 static MouseShortcut mshortcuts[] = {
 	/* mask                 button   function        argument       release */
-	{ XK_ANY_MOD,           Button4, kscrollup,      {.i = 1},		0, /* !alt */ -1 },
-	{ XK_ANY_MOD,           Button5, kscrolldown,    {.i = 1},		0, /* !alt */ -1 },
+	{ XK_ANY_MOD,           Button4, kscrollup,      {.i = mousescrollincrement},		0, /* !alt */ -1 },
+	{ XK_ANY_MOD,           Button5, kscrolldown,    {.i = mousescrollincrement},		0, /* !alt */ -1 },
 	{ XK_ANY_MOD,           Button2, selpaste,       {.i = 0},      1 },
 	{ ShiftMask,            Button4, ttysend,        {.s = "\033[5;2~"} },
 	{ XK_ANY_MOD,           Button4, ttysend,        {.s = "\031"} },