diff --git a/config.def.h b/config.def.h
index 2f1b24c..fc6b662 100644
--- a/config.def.h
+++ b/config.def.h
@@ -191,6 +191,8 @@ static uint forcemousemod = ShiftMask;
  */
 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,           Button2, selpaste,       {.i = 0},      1 },
 	{ ShiftMask,            Button4, ttysend,        {.s = "\033[5;2~"} },
 	{ XK_ANY_MOD,           Button4, ttysend,        {.s = "\031"} },
diff --git a/config.h b/config.h
index e8d6e84..2935e16 100644
--- a/config.h
+++ b/config.h
@@ -188,6 +188,8 @@ static uint forcemousemod = ShiftMask;
  */
 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,           Button2, selpaste,       {.i = 0},      1 },
 	{ ShiftMask,            Button4, ttysend,        {.s = "\033[5;2~"} },
 	{ XK_ANY_MOD,           Button4, ttysend,        {.s = "\031"} },
diff --git a/patches/todo/st-scrollback-mouse-altscreen-20220127-2c5edf2.diff b/patches/in-progress/st-scrollback-mouse-altscreen-20220127-2c5edf2.diff
similarity index 100%
rename from patches/todo/st-scrollback-mouse-altscreen-20220127-2c5edf2.diff
rename to patches/in-progress/st-scrollback-mouse-altscreen-20220127-2c5edf2.diff
diff --git a/st.c b/st.c
index 1e7ce77..c580c48 100644
--- a/st.c
+++ b/st.c
@@ -1069,6 +1069,11 @@ tattrset(int attr)
 	return 0;
 }
 
+int tisaltscr(void)
+{
+	return IS_SET(MODE_ALTSCREEN);
+}
+
 void
 tsetdirt(int top, int bot)
 {
diff --git a/st.h b/st.h
index c1cfc7d..4db5fc5 100644
--- a/st.h
+++ b/st.h
@@ -102,6 +102,7 @@ void sendbreak(const Arg *);
 void toggleprinter(const Arg *);
 
 int tattrset(int);
+int tisaltscr(void);
 void tnew(int, int);
 int tisaltscreen(void);
 void tresize(int, int);
diff --git a/x.c b/x.c
index 5fec927..07e482c 100644
--- a/x.c
+++ b/x.c
@@ -35,6 +35,7 @@ typedef struct {
 	void (*func)(const Arg *);
 	const Arg arg;
 	uint  release;
+	int  altscrn;  /* 0: don't care, -1: not alt screen, 1: alt screen */
 } MouseShortcut;
 
 typedef struct {
@@ -470,6 +471,7 @@ mouseaction(XEvent *e, uint release)
 	for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
 		if (ms->release == release &&
 		    ms->button == e->xbutton.button &&
+		    (!ms->altscrn || (ms->altscrn == (tisaltscr() ? 1 : -1))) &&
 		    (match(ms->mod, state) ||  /* exact or forced */
 		     match(ms->mod, state & ~forcemousemod))) {
 			ms->func(&(ms->arg));