diff --git a/src/Config.php b/src/Config.php
index 60d3f04..eaa203b 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -145,7 +145,10 @@ Class Config {
       $value = self :: $extra_variables[$key];
     }
     else if (!is_array($config) && !self :: loaded()) {
-      Log :: fatal('Configuration not loaded (on getting %s)', $key);
+      Log :: fatal(
+        "Configuration not loaded (on getting %s):\n%s",
+        $key, Log :: get_debug_backtrace_context()
+      );
       exit(1);
     }
     else {