diff --git a/build.sh b/build.sh
index e6445fcd679192613e61240386caa70195cfe349..63812e46573bbdef8381c60ef5d52ac4b1931a11 100755
--- a/build.sh
+++ b/build.sh
@@ -28,7 +28,7 @@ EOF
     exit 1
 fi
 
-function doTest {
+doTest() {
     if [[ $# -eq 0 ]]; then
         exec stack test
     fi
@@ -48,7 +48,7 @@ function doTest {
     esac
 }
 
-function doBench {
+doBench() {
     exec stack bench :bench --benchmark-arguments "$*"
 }