diff --git a/polkit.spec b/polkit.spec
index 9658892..4516401 100644
--- a/polkit.spec
+++ b/polkit.spec
@@ -6,7 +6,7 @@
 Summary: An authorization framework
 Name: polkit
 Version: 0.115
-Release: 4%{?dist}
+Release: 5%{?dist}
 License: LGPLv2+
 URL: http://www.freedesktop.org/wiki/Software/polkit
 Source0: http://www.freedesktop.org/software/polkit/releases/%{name}-%{version}.tar.gz
@@ -115,7 +115,10 @@ export LDFLAGS='-pie -Wl,-z,now -Wl,-z,relro'
 make V=1
 
 %install
-make install DESTDIR=$RPM_BUILD_ROOT INSTALL='install -p'
+make install DESTDIR=$RPM_BUILD_ROOT INSTALL='install -p' \
+    typelibsdir=%{_libdir}/girepository-1.0 \
+    girdir=%{_datadir}/gir-1.0
+
 
 rm -f $RPM_BUILD_ROOT%{_libdir}/*.la
 
@@ -182,6 +185,9 @@ exit 0
 %{_libdir}/girepository-1.0/*.typelib
 
 %changelog
+* Thu Sep 27 2018 Owen Taylor <otaylor@redhat.com> - 0.115-5
+- Fix installation with prefix != /usr
+
 * Mon Aug 13 2018 Jan Rybar <jrybar@redhat.com> - 0.115-4
 - Leaking zombie processess started by rules