--- rxvt-unicode/src/command.C	2010/01/29 17:27:36	1.437
+++ rxvt-unicode/src/command.C	2010/02/04 21:55:12	1.438
@@ -507,6 +507,8 @@
 #else
               lnsppg = nrow * 4 / 5;
 #endif
+              max_it (lnsppg, 1);
+
               if (keysym == XK_Prior)
                 {
                   scr_page (UP, lnsppg);