diff --git a/thefuck/shells/fish.py b/thefuck/shells/fish.py
index 9cf1d518..7f354b8e 100644
--- a/thefuck/shells/fish.py
+++ b/thefuck/shells/fish.py
@@ -51,7 +51,7 @@ class Fish(Generic):
     def app_alias(self, alias_name):
         if settings.alter_history:
             alter_history = ('    builtin history delete --exact'
-                             ' --case-sensitive -- $fucked_up_command')
+                             ' --case-sensitive -- $fucked_up_command\n')
         else:
             alter_history = ''
         # It is VERY important to have the variables declared WITHIN the alias