diff --git a/kubernetes/samples/scripts/create-fmw-infrastructure-domain/domain-home-in-image/create-domain.sh b/kubernetes/samples/scripts/create-fmw-infrastructure-domain/domain-home-in-image/create-domain.sh
index 46dbb85ac18..8ed6a4d219a 100755
--- a/kubernetes/samples/scripts/create-fmw-infrastructure-domain/domain-home-in-image/create-domain.sh
+++ b/kubernetes/samples/scripts/create-fmw-infrastructure-domain/domain-home-in-image/create-domain.sh
@@ -113,8 +113,8 @@ initOutputDir() {
 
 # try to execute image builder to see whether it is available
 validateImageBuilderAvailable() {
-  if ! [ -x "$(command -v ${WLSIMG_BUILDER})" ]; then
-    validationError "${WLSIMG_BUILDER} is not installed"
+  if ! [ -x "$(command -v ${WLSIMG_BUILDER:-docker})" ]; then
+    validationError "${WLSIMG_BUILDER:-docker} is not installed"
   fi
 }