diff --git a/dbus-glib.spec b/dbus-glib.spec
index 30a8494..58a405b 100644
--- a/dbus-glib.spec
+++ b/dbus-glib.spec
@@ -28,7 +28,7 @@ the GLib thread abstraction and main loop.
 %package devel
 Summary: Libraries and headers for the D-Bus GLib bindings
 Group: Development/Libraries
-Requires: %name = %{version}-%{release}
+Requires: %{name}%{?_isa} = %{version}-%{release}
 Requires: glib2-devel
 Requires: dbus-devel
 Requires: pkgconfig
@@ -94,6 +94,7 @@ rm -rf %{buildroot}
 - Use pkgconfig for BuildRequires
 - Remove outdated gtk subpackage
 - Use license for COPYING
+- Tighten subpackage dependencies with the isa macro
 
 * Sat Aug 16 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.100.2-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_Mass_Rebuild