diff --git a/kopete/protocols/jabber/libiris/iris/jabber/Makefile.am b/kopete/protocols/jabber/libiris/iris/jabber/Makefile.am
index b5ff00ee..7024cdf3 100644
--- a/kopete/protocols/jabber/libiris/iris/jabber/Makefile.am
+++ b/kopete/protocols/jabber/libiris/iris/jabber/Makefile.am
@@ -11,5 +11,9 @@ s5b.lo: s5b.moc
 
 CLEANFILES = s5b.moc
 s5b.moc: $(srcdir)/s5b.cpp $(srcdir)/s5b.h
-	${TQTMOC} ${MOC} $(srcdir)/s5b.h > $@
-	${TQTMOC} ${MOC} $(srcdir)/s5b.cpp >> $@
+	${TQTMOC} ${MOC} $(srcdir)/s5b.h s5b.moc.h
+	${TQTMOC} ${MOC} $(srcdir)/s5b.cpp s5b.moc.cpp
+	cat s5b.moc.h > $@
+	cat s5b.moc.cpp >> $@
+	rm s5b.moc.h
+	rm s5b.moc.cpp