diff --git a/src/conf.c b/src/conf.c
index e07b136..c129d5b 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -259,7 +259,7 @@ struct {
 
 const unsigned int ndirectives = sizeof (directives) / sizeof (directives[0]);
 
-void free_config (struct config_s *conf)
+static void free_config (struct config_s *conf)
 {
         safefree (conf->config_file);
         safefree (conf->logf_name);
diff --git a/src/conf.h b/src/conf.h
index 073cea2..97762e2 100644
--- a/src/conf.h
+++ b/src/conf.h
@@ -98,7 +98,6 @@ struct config_s {
         hashmap_t anonymous_map;
 };
 
-void free_config (struct config_s *conf);
 int reload_config_file (const char *config_fname, struct config_s *conf,
                         struct config_s *defaults);