diff --git a/ChangeLog b/ChangeLog
index 1c96edada3..4e7d64c0ef 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Aug 15 01:07:16 2008  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* common.mk ({$(srcdir)}.y.c): escape backslash.
+
 Fri Aug 15 01:05:39 2008  Tanaka Akira  <akr@fsij.org>
 
 	* transcode.c (econv_primitive_convert): set destination_buffer
diff --git a/common.mk b/common.mk
index 390b443fee..66f1342204 100644
--- a/common.mk
+++ b/common.mk
@@ -392,7 +392,7 @@ PHONY:
 parse.h {$(VPATH)}parse.h: {$(VPATH)}parse.c
 
 {$(srcdir)}.y.c:
-	$(YACC) -d $(YFLAGS) -o y.tab.c $(<:\=/)
+	$(YACC) -d $(YFLAGS) -o y.tab.c $(<:\\=/)
 	sed -e "/^#/s!y\.tab\.h!$(@:.c=.h)!" y.tab.h > $(@:.c=.h).new
 	@$(MV) $(@:.c=.h).new $(@:.c=.h)
 	sed -f $(srcdir)/tool/ytab.sed -e "/^#/s!y\.tab\.c!$@!" y.tab.c > $@.new