diff --git a/pkgs/development/tools/ocaml/camlp4/default.nix b/pkgs/development/tools/ocaml/camlp4/default.nix
index bd2466c8854..a8043a9fc5e 100644
--- a/pkgs/development/tools/ocaml/camlp4/default.nix
+++ b/pkgs/development/tools/ocaml/camlp4/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation {
   '';
 
 
-  makePhase = "make all";
+  makeFlags = "all";
 
   installTargets = "install install-META";