diff --git a/auto/lib/conf b/auto/lib/conf
index 6e00592..70053b5 100644
--- a/auto/lib/conf
+++ b/auto/lib/conf
@@ -2,7 +2,7 @@
 # Copyright (C) Igor Sysoev
 
 
-if [ $USE_PCRE = YES ]; then
+if [ $USE_PCRE = YES -o $PCRE != NONE ]; then
     . auto/lib/pcre/conf
 fi