diff --git a/Mage/Config.php b/Mage/Config.php
index 6ce69e1..fe22b13 100644
--- a/Mage/Config.php
+++ b/Mage/Config.php
@@ -352,7 +352,7 @@ class Config
      */
     public function getHostIdentityFileOption()
     {
-        return $this->deployment('identity-file') ? '-i '.$this->deployment('identity-file').' ': '';
+        return $this->deployment('identity-file') ? ('-i ' . $this->deployment('identity-file') . ' ') : '';
     }
     
     /**
@@ -506,4 +506,4 @@ class Config
         }
     }
 
-}
\ No newline at end of file
+}