diff --git a/ext/standard/Makefile.frag b/ext/standard/Makefile.frag
index b9bcc05116b..1d766175051 100644
--- a/ext/standard/Makefile.frag
+++ b/ext/standard/Makefile.frag
@@ -1,9 +1,9 @@
 
 $(srcdir)/var_unserializer.c: $(srcdir)/var_unserializer.re
-	@(cd $(top_srcdir); $(RE2C) -b ext/standard/var_unserializer.re > $@)
+	@(cd $(top_srcdir); $(RE2C) -b -o ext/standard/var_unserializer.c ext/standard/var_unserializer.re)
 
 $(srcdir)/url_scanner_ex.c: $(srcdir)/url_scanner_ex.re
-	@(cd $(top_srcdir); $(RE2C) -b ext/standard/url_scanner_ex.re > $@)
+	@(cd $(top_srcdir); $(RE2C) -b -o ext/standard/url_scanner_ex.c	ext/standard/url_scanner_ex.re)
 
 $(builddir)/info.lo: $(builddir)/../../main/build-defs.h