1 files changed, 1 insertions, 1 deletions
diff --git a/regex.h b/regex.h
index a3c3c784b7..70ba23bd02 100644
--- a/regex.h
+++ b/regex.h
@@ -60,7 +60,7 @@
 #define RE_CHAR_CLASSES (1L << 9)
 
 /* match will be done case insensetively */
-#define RE_OPTION_IGNORECASE (1L<<1)
+#define RE_OPTION_IGNORECASE (1L)
 /* perl-style extended pattern available */
 #define RE_OPTION_EXTENDED   (RE_OPTION_IGNORECASE<<1)
 /* newline will be included for . and invert charclass matches */