diff --git a/aliases.zsh b/aliases.zsh
index 8246a2c..092c60c 100644
--- a/aliases.zsh
+++ b/aliases.zsh
@@ -80,6 +80,7 @@ alias -s AVI=" xdg-open"
 alias -s mov=" xdg-open"
 alias -s mpg=" xdg-open"
 alias -s m4v=" xdg-open"
+alias -s MP4=" xdg-open"
 alias -s ogg=" xdg-open"
 alias -s ogv=" xdg-open"
 alias -s flv=" xdg-open"