diff --git a/configure.com b/configure.com
index c4f86b3604ae..99527c180bfc 100644
--- a/configure.com
+++ b/configure.com
@@ -5826,7 +5826,7 @@ $ WC "PERL_CONFIG_SH='true'"
 $ WC "_a='" + lib_ext + "'"
 $ WC "_exe='" + exe_ext + "'"
 $ WC "_o='" + obj_ext + "'"
-$ WC "afs='undef'"
+$ WC "afs='false'"
 $ WC "afsroot='/afs'"
 $ WC "alignbytes='" + alignbytes + "'"
 $ WC "aphostname='write sys$output f$edit(f$getsyi(\""SCSNODE\""),\""TRIM,LOWERCASE\"")'"