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-rw-r--r--crawl-ref/source/AppHdr.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/crawl-ref/source/AppHdr.h b/crawl-ref/source/AppHdr.h
index 87f5b9e55d..4177673947 100644
--- a/crawl-ref/source/AppHdr.h
+++ b/crawl-ref/source/AppHdr.h
@@ -196,8 +196,8 @@
// #define WINMM_PLAY_SOUNDS
// Use Perl-compatible regular expressions. libpcre must be available and
- // linked in.
- // #define REGEX_PCRE
+ // linked in. This is optional.
+ #define REGEX_PCRE
#else
#error Missing platform #define or unsupported compiler.
#endif