diff --git a/Wnn/pubdicplus/Makefile.in b/Wnn/pubdicplus/Makefile.in
index 41c868d..e9ffc28 100644
--- a/Wnn/pubdicplus/Makefile.in
+++ b/Wnn/pubdicplus/Makefile.in
@@ -422,7 +422,7 @@ fzk.master-.c: fzk.master
 	$(LN) $? $@
 
 std.fzk: fzk.master-.c $(FZK_SRC)
-	$(CPP) $(FZK_FLAG) fzk.master-.c | egrep -v '^(# |#line |#pragma |$$)' | $(ATOF) -h $(HINSI) $@
+	$(CPP) -P $(FZK_FLAG) fzk.master-.c | egrep -v '^(# |#line |#pragma |$$)' | $(ATOF) -h $(HINSI) $@
 
 full.fzk: $(FZK_SRC)
 	$(MAKE) FZK_FLAG=-DKANSAI std.fzk