diff --git a/src/Makefile.am b/src/Makefile.am
index 0d6afa27a..6c054e9ed 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -580,7 +580,7 @@ stamp-meta-enum-types.h: $(libmutterinclude_headers) meta-enum-types.h.in
 	$(AM_V_GEN) ( cd $(srcdir) && \
 	  $(GLIB_MKENUMS) \
 	    --template meta-enum-types.h.in \
-	  $(libmutterinclude_base_headers) ) >> xgen-teth && \
+	  $(libmutterinclude_headers) ) > xgen-teth && \
 	(cmp -s xgen-teth meta/meta-enum-types.h || cp xgen-teth meta/meta-enum-types.h) && \
 	rm -f xgen-teth && \
 	echo timestamp > $(@F)
@@ -589,7 +589,7 @@ meta-enum-types.c: stamp-meta-enum-types.h meta-enum-types.c.in
 	  $(AM_V_GEN) ( cd $(srcdir) && \
 	  $(GLIB_MKENUMS) \
 	    --template meta-enum-types.c.in \
-	  $(libmutterinclude_base_headers) ) >> xgen-tetc && \
+	  $(libmutterinclude_headers) ) > xgen-tetc && \
 	cp xgen-tetc meta-enum-types.c && \
 	rm -f xgen-tetc