diff --git a/pkgs/development/ocaml-modules/ocaml-libvirt/default.nix b/pkgs/development/ocaml-modules/ocaml-libvirt/default.nix
index 11405c0ebe5e..6a9e4e1d8c5c 100644
--- a/pkgs/development/ocaml-modules/ocaml-libvirt/default.nix
+++ b/pkgs/development/ocaml-modules/ocaml-libvirt/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     autoconf
   '';
 
-  buildPhase = if stdenv.cc.isClang then "make all opt CPPFLAGS=-Wno-error" else "make all opt";
+  buildPhase = "make all opt CPPFLAGS=-Wno-error";
 
   installPhase = "make install-opt";