diff --git a/pkgs/development/tools/wp-cli/default.nix b/pkgs/development/tools/wp-cli/default.nix
index 0d828eb8b9ed..a4ac97c9264f 100644
--- a/pkgs/development/tools/wp-cli/default.nix
+++ b/pkgs/development/tools/wp-cli/default.nix
@@ -54,5 +54,6 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = with maintainers; [ peterhoeg ];
     platforms = platforms.all;
+    mainProgram = "wp";
   };
 }