diff -ur httpd-2.0.59-orig/modules/arch/win32/mod_isapi.c httpd-2.0.59/modules/arch/win32/mod_isapi.c
--- httpd-2.0.59-orig/modules/arch/win32/mod_isapi.c	Wed Jul 12 03:40:55 2006
+++ httpd-2.0.59/modules/arch/win32/mod_isapi.c	Thu Sep 21 14:38:17 2006
@@ -1380,7 +1380,7 @@
     ap_add_common_vars(r);
     ap_add_cgi_vars(r);
     apr_table_setn(e, "UNMAPPED_REMOTE_USER", "REMOTE_USER");
-    if ((val = apr_table_get(e, "HTTPS")) && strcmp(val, "on"))
+    if ((val = apr_table_get(e, "HTTPS")) && (strcmp(val, "on") == 0))
         apr_table_setn(e, "SERVER_PORT_SECURE", "1");
     else
         apr_table_setn(e, "SERVER_PORT_SECURE", "0");