1 files changed, 1 insertions, 1 deletions
diff --git a/eval.c b/eval.c
index 558c021e..ea83b282 100644
--- a/eval.c
+++ b/eval.c
@@ -1009,7 +1009,7 @@ set_TEXTDOMAIN()
 void
 update_ERRNO_int(int errcode)
 {
-	char *cp;
+	const char *cp;
 
 	update_PROCINFO_num("errno", errcode);
 	if (errcode) {