diff --git a/config.def.h b/config.def.h
index a5eed39..0359cd5 100644
--- a/config.h
+++ b/config.h
@@ -32,7 +32,7 @@ static char* const config_canonical_name = "treebird";
  *
  * Example: "https://shitposter.club/"
  */
-static char* const config_instance_url = "https://my-instance.social/";
+extern char* config_instance_url;
 
 /*
  * OPTIONAL - Mainly for development (or broken servers)