diff --git a/libdmtx.spec b/libdmtx.spec
index 11206fa..ed3ba95 100644
--- a/libdmtx.spec
+++ b/libdmtx.spec
@@ -1,4 +1,4 @@
-%{!?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)")}
 
 
 Name:           libdmtx