diff -Naur gcalctool-5.5.16/gcalctool/calctool.c gcalctool-5.5.16-shift/gcalctool/calctool.c
--- gcalctool-5.5.16/gcalctool/calctool.c	2004-11-15 17:21:43.000000000 +0000
+++ gcalctool-5.5.16-shift/gcalctool/calctool.c	2004-12-23 08:53:17.000000000 +0000
@@ -846,8 +846,8 @@
     N_("Con"),
     N_("Constants [#]"),
     NULL,
-    { GDK_SHIFT_MASK, 0 },   
-    { GDK_numbersign, 0 },   
+    { GDK_SHIFT_MASK, 0,              0 },
+    { GDK_numbersign, GDK_numbersign, 0 },
     '#',
     M_CON,            
     do_pending,
diff -Naur gcalctool-5.5.16/gcalctool/gtk.c gcalctool-5.5.16-shift/gcalctool/gtk.c
--- gcalctool-5.5.16/gcalctool/gtk.c	2004-11-15 22:29:51.000000000 +0000
+++ gcalctool-5.5.16-shift/gcalctool/gtk.c	2004-12-23 08:53:17.000000000 +0000
@@ -1795,12 +1795,12 @@
 {
     int i, j;
 
-    state = state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK);
+    state = state & (GDK_CONTROL_MASK | GDK_MOD1_MASK);
     for (i = 0; i < n; i++) {
         j = 0;
         while (buttons[i].value[j] != 0) {
             if (buttons[i].value[j] == keyval) {
-                if (buttons[i].mods[j] == state) {
+                if ((buttons[i].mods[j] & ~GDK_SHIFT_MASK) == state) {
                     button_proc(GTK_BUTTON(gtk_buttons[i]), NULL);
                     return(TRUE);
                 }