diff --git a/genfiles b/genfiles
index 0bf92fc0e65..2879b86cfe5 100755
--- a/genfiles
+++ b/genfiles
@@ -17,3 +17,6 @@ EOF
 (cd ext/standard && make parsedate.c)
 
 rm config_vars.mk .deps ext/standard/libs.mk $files
+
+re2c -b ext/standard/url_scanner_ex.re | grep -v "#line" > ext/standard/url_scanner_ex.c
+