1 files changed, 1 insertions, 1 deletions
diff --git a/src/io.c b/src/io.c
index 2067dd0..7f8565a 100644
--- a/src/io.c
+++ b/src/io.c
@@ -324,7 +324,7 @@ io_extract_data (char *dst_data, const char *org, int len)
   *dst_data = '\0';
 }
 
-void
+static void
 display_mark (void)
 {
   const int DISPLAY_TIME = 1;