diff --git a/config.def.h b/config.def.h
index 8b25d40..6769f99 100644
--- a/config.def.h
+++ b/config.def.h
@@ -201,8 +201,8 @@ static Shortcut shortcuts[] = {
 	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
 	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
 	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
-	{ ShiftMask,            XK_Page_Up,     kscrollup,      {.i = -1} },
-	{ ShiftMask,            XK_Page_Down,   kscrolldown,    {.i = -1} },
+	{ ShiftMask,            XK_Page_Up,     kscrollup,      {.f = -0.1} },
+	{ ShiftMask,            XK_Page_Down,   kscrolldown,    {.f = -0.1} },
 };
 
 /*
diff --git a/st.c b/st.c
index a3b3c9d..5a93594 100644
--- a/st.c
+++ b/st.c
@@ -1087,14 +1087,14 @@ tswapscreen(void)
 void
 kscrollup(const Arg *a)
 {
-	int n = a->i;
+	float n = a->f;
 
 	if (IS_SET(MODE_ALTSCREEN))
 		return;
 
-	if (n < 0) n = (-n) * term.row;
+	if (n < 0) n = MAX((-n) * term.row, 1);
 	if (n > TSCREEN.size - term.row - TSCREEN.off) n = TSCREEN.size - term.row - TSCREEN.off;
-	while (!TLINE(-n)) --n;
+	while (!TLINE((int)-n)) --n;
 	TSCREEN.off += n;
 	selscroll(0, n);
 	tfulldirt();
@@ -1104,12 +1104,12 @@ void
 kscrolldown(const Arg *a)
 {
 
-	int n = a->i;
+	float n = a->f;
 
 	if (IS_SET(MODE_ALTSCREEN))
 		return;
 
-	if (n < 0) n = (-n) * term.row;
+	if (n < 0) n = MAX((-n) * term.row, 1);
 	if (n > TSCREEN.off) n = TSCREEN.off;
 	TSCREEN.off -= n;
 	selscroll(0, -n);