diff --git a/src/escpos/printer.py b/src/escpos/printer.py
index 3100e0b..0aa7dac 100644
--- a/src/escpos/printer.py
+++ b/src/escpos/printer.py
@@ -469,7 +469,7 @@ if _CUPSPRINT:
 
         def close(self):
             """ Close CUPS connection.
-            
+
             Send pending job to the printer if needed.
             """
             if self.pending_job: