diff --git a/cde/programs/dthello/Makefile.am b/cde/programs/dthello/Makefile.am
index 7f645462d..360e1dbbb 100644
--- a/cde/programs/dthello/Makefile.am
+++ b/cde/programs/dthello/Makefile.am
@@ -13,3 +13,11 @@ dthello_LDADD += $(TIRPCLIB)
 endif
 
 dthello_SOURCES = dthello.c
+
+CPP_TARGETS = Dthello
+BUILT_SOURCES = $(CPP_TARGETS)
+CLEANFILES = $(CPP_TARGETS)
+
+Dthello: Dthello.src
+	$(RM) $@
+	$(GENCPP) -P -DXCOMM=#  $< > $@