1 files changed, 1 insertions, 1 deletions
diff --git a/grep.h b/grep.h
index cd055cdfa8..5b083affe1 100644
--- a/grep.h
+++ b/grep.h
@@ -35,7 +35,7 @@ struct grep_pat {
 	const char *origin;
 	int no;
 	enum grep_pat_token token;
-	const char *pattern;
+	char *pattern;
 	size_t patternlen;
 	enum grep_header_field field;
 	regex_t regexp;