1 files changed, 1 insertions, 1 deletions
diff --git a/common.mk b/common.mk
index 5991b6d1c2..8f4330b9a6 100644
--- a/common.mk
+++ b/common.mk
@@ -983,7 +983,7 @@ $(REVISION_H): $(srcdir)/version.h $(srcdir)/tool/file2lastrev.rb $(REVISION_FOR
 	-$(Q) $(BASERUBY) $(srcdir)/tool/file2lastrev.rb -q --revision.h "$(srcdir)" > revision.tmp
 	$(Q)$(IFCHANGE) "--timestamp=$@" "$(srcdir)/revision.h" revision.tmp
 
-$(srcdir)/ext/ripper/ripper.c: $(srcdir)/parse.y id.h
+$(srcdir)/ext/ripper/ripper.c: $(srcdir)/ext/ripper/tools/preproc.rb $(srcdir)/parse.y id.h
 	$(ECHO) generating $@
 	$(Q) VPATH=$${PWD-`pwd`} && $(CHDIR) $(@D) && \
 	sed /AUTOGENERATED/q depend | \