1 files changed, 4 insertions, 4 deletions

diff --git a/ot_config.h b/ot_config.h
index ab25e2c..059573a 100644
--- a/ot_config.h
+++ b/ot_config.h
@@ -22,10 +22,10 @@ typedef struct {
   int64_t    sock;
 } ot_listen;
 
-extern char *g_redirecturl;
-extern char *g_serverdir;
-extern char *g_serveruser;
-extern char *g_statefile;
+extern const char *g_redirecturl;
+extern const char *g_serverdir;
+extern const char *g_serveruser;
+extern const char *g_statefile;
 
 /* Reads the command line and every config file it names. Exits on error. */
 void       config_parse(int argc, char **argv);