diff --git a/pygobject2.spec b/pygobject2.spec
index 5a0b372..6956201 100644
--- a/pygobject2.spec
+++ b/pygobject2.spec
@@ -70,7 +70,7 @@ find $RPM_BUILD_ROOT -name '*.la' -delete
 find $RPM_BUILD_ROOT -name '*.a' -delete
 rm examples/Makefile*
 
-sed -r -i 's|#! ?/usr/bin/env python|#!%{__python2}|' %{buildroot}/usr/share/pygobject/2.0/codegen/*.py
+sed -r -i 's|#! ?/usr/bin/env python|#!%{__python2}|' %{buildroot}%{_datadir}/pygobject/2.0/codegen/*.py
 
 %ldconfig_scriptlets