diff --git a/games/eternity/keys.csc b/games/eternity/keys.csc
index eb82183..ba3f07f 100644
--- a/games/eternity/keys.csc
+++ b/games/eternity/keys.csc
@@ -75,4 +75,5 @@ bind pgdn "menu_pagedown"
 bind pgdn "console_pagedown"
 bind f11 "gamma /"
 bind f12 "quit"
+bind mouse1 "attack"
 bind mouse2 "altattack"