diff --git a/ocaml-lablgl.spec b/ocaml-lablgl.spec
index def9f7a..3e44e35 100644
--- a/ocaml-lablgl.spec
+++ b/ocaml-lablgl.spec
@@ -11,6 +11,7 @@ URL:            http://wwwfun.kurims.kyoto-u.ac.jp/soft/olabl/lablgl.html
 Source0:        https://github.com/garrigue/lablgl/archive/v1.06/%{name}-%{version}.tar.gz
 Patch0:         lablgl-freeglut.patch
 
+BuildRequires: make
 BuildRequires:  freeglut-devel 
 BuildRequires:  ocaml >= 3.12.1-3
 BuildRequires:  tcl-devel