diff --git a/Makefile.am b/Makefile.am
index 86747a4c1d..af5db2ceba 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -562,11 +562,11 @@ EXTRA_DIST += \
 	libnm-core/crypto_gnutls.c \
 	libnm-core/crypto_nss.c
 
-libnm-core/nm-vpn-dbus-types.xml: libnm-core libnm-core/nm-vpn-dbus-interface.h tools/enums-to-docbook.pl
+libnm-core/nm-vpn-dbus-types.xml: libnm-core/nm-vpn-dbus-interface.h tools/enums-to-docbook.pl
 	@$(MKDIR_P) libnm-core/
 	$(AM_V_GEN) @PERL@ $(srcdir)/tools/enums-to-docbook.pl 'nm-vpn-dbus-types' 'VPN Plugin D-Bus API Types' $^ >$@
 
-libnm-core/nm-dbus-types.xml: libnm-core libnm-core/nm-dbus-interface.h tools/enums-to-docbook.pl
+libnm-core/nm-dbus-types.xml: libnm-core/nm-dbus-interface.h tools/enums-to-docbook.pl
 	@$(MKDIR_P) libnm-core/
 	$(AM_V_GEN) @PERL@ $(srcdir)/tools/enums-to-docbook.pl 'nm-dbus-types' 'NetworkManager D-Bus API Types' $^ >$@