diff --git a/core/rsync/build b/core/rsync/build
index 6a623847..8b4a7e2c 100755
--- a/core/rsync/build
+++ b/core/rsync/build
@@ -1,9 +1,11 @@
 #!/bin/sh -e
 
-export CFLAGS="-static $CFLAGS"
-
+# Swap to awk script instead of perl script
+# for building rsync. See files/mkproto.awk.
 sed -i 's/perl/awk -f/;s/mkproto.pl/mkproto.awk/' Makefile.in
 
+export CFLAGS="-static $CFLAGS"
+
 ./configure \
     --prefix=/usr \
     --with-included-popt \