diff --git a/ocaml-fileutils.spec b/ocaml-fileutils.spec
index 976bc65..a722964 100644
--- a/ocaml-fileutils.spec
+++ b/ocaml-fileutils.spec
@@ -64,7 +64,7 @@ developing applications that use %{name}.
 
 
 %build
-oasis setup
+%oasis_setup
 %ocaml_oasis_configure --enable-docs
 %ocaml_oasis_build
 %ocaml_oasis_doc