diff --git a/scripts/build-aci b/scripts/build-aci
index 9d5464ffa..69b56214b 100755
--- a/scripts/build-aci
+++ b/scripts/build-aci
@@ -8,7 +8,7 @@ IMAGEDIR=${IMAGEDIR:-bin/image-aci}
 
 VERSION=$1
 
-if [ ! -x "$ACTOOL" ] ; then
+if ! command -v $ACTOOL >/dev/null; then
     echo "actool ($ACTOOL) is not executable"
     exit 1
 fi