1 files changed, 1 insertions, 1 deletions
diff --git a/common.mk b/common.mk
index f9f317d78a..182d1db920 100644
--- a/common.mk
+++ b/common.mk
@@ -873,7 +873,7 @@ extconf: $(PREP)
 rbconfig.rb: $(RBCONFIG)
 
 $(HAVE_BASERUBY:no=)$(RBCONFIG)$(HAVE_BASERUBY:no=): $(PREP)
-$(RBCONFIG): $(tooldir)/mkconfig.rb config.status $(srcdir)/version.h
+$(RBCONFIG): $(tooldir)/mkconfig.rb config.status $(srcdir)/version.h $(srcdir)/common.mk
 	$(Q)$(BOOTSTRAPRUBY) -n \
 	-e 'BEGIN{version=ARGV.shift;mis=ARGV.dup}' \
 	-e 'END{abort "UNICODE version mismatch: #{mis}" unless mis.empty?}' \