1 files changed, 1 insertions, 1 deletions

diff --git a/signal.c b/signal.c
index bcf7b1d96b..628fdc3fc6 100644
--- a/signal.c
+++ b/signal.c
@@ -191,7 +191,7 @@ signo2signm(no)
     return 0;
 }
 
-char *
+const char *
 ruby_signal_name(no)
     int no;
 {