diff --git a/ext/date/lib/README b/ext/date/lib/README
index bc450f633d2..12f09bc5e28 100644
--- a/ext/date/lib/README
+++ b/ext/date/lib/README
@@ -3,4 +3,4 @@ Regenerating Parser
 
 Make sure you use re2c 0.9.10 or higher:
 
-/dat/dev/sf/re2c/re2c -d -b -o ext/date/parse_date.c ext/date/parse_date.re
+/dat/dev/sf/re2c/re2c -d -b -o ext/date/lib/parse_date.c ext/date/lib/parse_date.re