Index: win32ss/user/ntuser/scrollbar.c
===================================================================
--- win32ss/user/ntuser/scrollbar.c	(revision 59067)
+++ win32ss/user/ntuser/scrollbar.c	(working copy)
@@ -425,13 +425,13 @@
    }
 
    /* Make sure the page size is valid */
-   if (Info->nPage < 0)
+   if ((Info->nMax - Info->nMin + 1UL) < Info->nPage)
    {
-      pSBData->page = Info->nPage = 0;
+      pSBData->page = Info->nPage = Info->nMax - Info->nMin + 1;
    }
-   else if ((Info->nMax - Info->nMin + 1UL) < Info->nPage)
+   else 
    {
-      pSBData->page = Info->nPage = Info->nMax - Info->nMin + 1;
+      pSBData->page = Info->nPage = 0;
    }
 
    /* Make sure the pos is inside the range */