1 files changed, 1 insertions, 1 deletions

diff --git a/src/xterm.c b/src/xterm.c
index 40ddaa0d345..1be9b4412f9 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -4167,7 +4167,7 @@ xm_scroll_callback (widget, client_data, call_data)
         XtVaGetValues (widget, XmNsliderSize, &slider_size, NULL);
         UNBLOCK_INPUT;
 
-        whole = XM_SB_MAX;
+        whole = XM_SB_MAX - slider_size;
         portion = min (cs->value, whole);
         part = scroll_bar_handle;
         bar->dragging = make_number (cs->value);