diff --git a/config.def.h b/config.def.h
index a359500..22b692b 100644
--- a/config.def.h
+++ b/config.def.h
@@ -267,14 +267,9 @@ ResourcePref resources[] = {
  * Beware that overloading Button1 will disable the selection.
  */
 static MouseShortcut mshortcuts[] = {
-	/* button               mask            string */
-	#if SCROLLBACK_MOUSE_PATCH || SCROLLBACK_MOUSE_ALTSCREEN_PATCH
-	{ Button4,              XK_NO_MOD,      "\031" },
-	{ Button5,              XK_NO_MOD,      "\005" },
-	#else
-	{ Button4,              XK_ANY_MOD,     "\031" },
-	{ Button5,              XK_ANY_MOD,     "\005" },
-	#endif // SCROLLBACK_MOUSE_PATCH / SCROLLBACK_MOUSE_ALTSCREEN_PATCH
+	/* mask                 button   function        argument */
+	{ XK_ANY_MOD,           Button4, ttysend,        {.s = "\031"} },
+	{ XK_ANY_MOD,           Button5, ttysend,        {.s = "\005"} },
 };
 
 #if SCROLLBACK_MOUSE_PATCH || SCROLLBACK_MOUSE_ALTSCREEN_PATCH
diff --git a/st.h b/st.h
index 832642a..f8fa2be 100644
--- a/st.h
+++ b/st.h
@@ -78,6 +78,7 @@ typedef union {
 	uint ui;
 	float f;
 	const void *v;
+	const char *s;
 } Arg;
 
 void die(const char *, ...);
diff --git a/x.c b/x.c
index f3f0dab..1467839 100644
--- a/x.c
+++ b/x.c
@@ -33,9 +33,10 @@ typedef struct {
 } Shortcut;
 
 typedef struct {
-	uint b;
-	uint mask;
-	char *s;
+	uint mod;
+	uint button;
+	void (*func)(const Arg *);
+	const Arg arg;
 } MouseShortcut;
 
 typedef struct {
@@ -57,6 +58,7 @@ static void clipcopy(const Arg *);
 static void clippaste(const Arg *);
 static void numlock(const Arg *);
 static void selpaste(const Arg *);
+static void ttysend(const Arg *);
 static void zoom(const Arg *);
 static void zoomabs(const Arg *);
 static void zoomreset(const Arg *);
@@ -308,6 +310,12 @@ clippaste(const Arg *dummy)
 			xw.win, CurrentTime);
 }
 
+void
+numlock(const Arg *dummy)
+{
+	win.mode ^= MODE_NUMLOCK;
+}
+
 void
 selpaste(const Arg *dummy)
 {
@@ -316,9 +324,9 @@ selpaste(const Arg *dummy)
 }
 
 void
-numlock(const Arg *dummy)
+ttysend(const Arg *arg)
 {
-	win.mode ^= MODE_NUMLOCK;
+	ttywrite(arg->s, strlen(arg->s), 1);
 }
 
 void
@@ -477,9 +485,9 @@ bpress(XEvent *e)
 	if (tisaltscr())
 	#endif // SCROLLBACK_MOUSE_ALTSCREEN_PATCH
 	for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
-		if (e->xbutton.button == ms->b
-				&& match(ms->mask, e->xbutton.state)) {
-			ttywrite(ms->s, strlen(ms->s), 1);
+		if (e->xbutton.button == ms->button
+				&& match(ms->mod, e->xbutton.state)) {
+			ms->func(&(ms->arg));
 			return;
 		}
 	}