diff --git a/cpp/preprocess.sh b/cpp/preprocess.sh
index 69d3b966..332dd9ca 100755
--- a/cpp/preprocess.sh
+++ b/cpp/preprocess.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-function preprocess() {
+preprocess() {
 	erb $1.erb > $1.tmp
 	mv $1.tmp $1
 }