diff --git a/librefi/logger.py b/librefi/logger.py
index 5a99641..d374095 100644
--- a/librefi/logger.py
+++ b/librefi/logger.py
@@ -12,18 +12,21 @@ class _Logger:
         self.KEY = key
         self.LOG_LEVEL = log_level
 
+    def _do_log(self, message):
+        self.printer("[" + str(self.KEY) + "] " + str(message))
+
     def debug(self, message):
         if self.LOG_LEVEL <= LOG_LEVELS.DEBUG:
-            self.printer("[" + self.KEY + "] " + message)
+            self._do_log(message)
 
     def info(self, message):
         if self.LOG_LEVEL <= LOG_LEVELS.INFO:
-            self.printer("[" + self.KEY + "] " + message)
+            self._do_log(message)
 
     def error(self, message):
         if self.LOG_LEVEL <= LOG_LEVELS.ERROR:
-            self.printer("[" + self.KEY + "] " + message)
+            self._do_log(message)
 
     def fatal(self, message):
         if self.LOG_LEVEL <= LOG_LEVELS.FATAL:
-            self.printer("[" + self.KEY + "] " + message)
+            self._do_log(message)