diff --git a/webssh/handler.py b/webssh/handler.py
index 85e31a1..6c45b4f 100644
--- a/webssh/handler.py
+++ b/webssh/handler.py
@@ -178,8 +178,7 @@ class PrivateKey(object):
         logging.error(str(self.last_exception))
         msg = 'Invalid key'
         if self.password:
-            msg += ' or wrong passphrase "{}" for decrypting it.'.format(
-                    self.password)
+            msg += ' or wrong passphrase for decrypting it.'
         raise InvalidValueError(msg)