diff --git a/pkgs/applications/networking/irc/weechat/default.nix b/pkgs/applications/networking/irc/weechat/default.nix
index d9a2ed5789f5..46d5d97e4375 100644
--- a/pkgs/applications/networking/irc/weechat/default.nix
+++ b/pkgs/applications/networking/irc/weechat/default.nix
@@ -95,6 +95,7 @@ let
         '';
         license = lib.licenses.gpl3;
         maintainers = with lib.maintainers; [ ncfavier ];
+        mainProgram = "weechat";
         platforms = lib.platforms.unix;
       };
     }