diff --git a/PyGreSQL.spec b/PyGreSQL.spec
index e5b5690..76bb940 100644
--- a/PyGreSQL.spec
+++ b/PyGreSQL.spec
@@ -24,7 +24,7 @@ BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-root
 
 BuildRequires:	postgresql-devel python-devel
 
-%{!?python_sitearch: %define python_sitearch %(%{__python} -c "from distutils.sysconfig import get_python_lib; print get_python_lib(1)")}
+%{!?python_sitearch: %global python_sitearch %(%{__python} -c "from distutils.sysconfig import get_python_lib; print get_python_lib(1)")}
 
 %description
 PostgreSQL is an advanced Object-Relational database management system.