diff --git a/python-qt5.spec b/python-qt5.spec
index 48e2847..7810e34 100644
--- a/python-qt5.spec
+++ b/python-qt5.spec
@@ -286,7 +286,7 @@ pushd %{_target_platform}
   --sip-incdir %{_prefix}/include/python%{python2_version}/ \
   --dbus %{_includedir}/dbus-1.0/ \
   QMAKE_CFLAGS_RELEASE="%{optflags}" \
-  QMAKE_CXXFLAGS_RELEASE="%{optflags}" \
+  QMAKE_CXXFLAGS_RELEASE="%{optflags} -I%{_libdir}/dbus-1.0/include/" \
   QMAKE_LFLAGS_RELEASE="%{?__global_ldflags}"
 
 %make_build
@@ -309,7 +309,7 @@ pushd %{_target_platform}-python3
   --sip-incdir %{_prefix}/include/python%{python3_version}m/ \
   --dbus %{_includedir}/dbus-1.0/ \
   QMAKE_CFLAGS_RELEASE="%{optflags}" \
-  QMAKE_CXXFLAGS_RELEASE="%{optflags}" \
+  QMAKE_CXXFLAGS_RELEASE="%{optflags} -I%{_libdir}/dbus-1.0/include/" \
   QMAKE_LFLAGS_RELEASE="%{?__global_ldflags}"
 
 %make_build