diff --git a/scripts/run-e2e-test.sh b/scripts/run-e2e-test.sh
index 7e65d3606..cd42be548 100755
--- a/scripts/run-e2e-test.sh
+++ b/scripts/run-e2e-test.sh
@@ -6,7 +6,6 @@ set -e
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 GINKGO_TEST_BUILD="$SCRIPT_DIR/../test/build"
-OSTYPE=${OSTYPE:-"linux-gnu"}
 source "$SCRIPT_DIR"/lib/common.sh
 
 # TEST_IMAGE_REGISTRY is the registry in test-infra-* accounts where e2e test images are stored
@@ -135,11 +134,7 @@ function install_controller_for_adc_regions() {
     # Iterate through the mapping and perform the replacements
     for default_url in "${!url_mapping[@]}"; do
       adc_url="${url_mapping[$default_url]}"
-      if [[ "$OSTYPE" == "darwin"* ]]; then
-        sed -i "" "s#$default_url#$adc_url#g" "$cert_manager_yaml"
-      else
-        sed -i "s#$default_url#$adc_url#g" "$cert_manager_yaml"
-      fi
+      sed -i "s#$default_url#$adc_url#g" "$cert_manager_yaml"
     done
     echo "Image URLs in $cert_manager_yaml have been updated to use the ADC registry"
     kubectl apply -f $cert_manager_yaml || true
@@ -147,17 +142,16 @@ function install_controller_for_adc_regions() {
     echo "install the controller via yaml"
     controller_yaml="$SCRIPT_DIR"/../test/prow/v2_6_0_adc.yaml
     default_controller_image="public.ecr.aws/eks/aws-load-balancer-controller"
-    if [[ "$OSTYPE" == "darwin"* ]]; then
-      sed -i "" "s#$default_controller_image#$IMAGE#g" "$controller_yaml"
-      sed -i "" "s#your-cluster-name#$CLUSTER_NAME#g" "$controller_yaml"
-    else
-      sed -i "s#$default_controller_image#$IMAGE#g" "$controller_yaml"
-      sed -i "s#your-cluster-name#$CLUSTER_NAME#g" "$controller_yaml"
-    fi
+    sed -i "s#$default_controller_image#$IMAGE#g" "$controller_yaml"
     echo "Image URL in $controller_yaml has been updated to $IMAGE"
+    sed -i "s#your-cluster-name#$CLUSTER_NAME#g" "$controller_yaml"
     echo "cluster name in $controller_yaml has been update to $CLUSTER_NAME"
     kubectl apply -f $controller_yaml || true
     kubectl rollout status -n kube-system deployment aws-load-balancer-controller || true
+
+    echo "apply the manifest for ingressclass and ingressclassparam"
+    ingclass_yaml="$SCRIPT_DIR"/../test/prow/v2_6_0_ingclass.yaml
+    kubectl apply -f $ingclass_yaml || true
 }
 
 echo "installing AWS load balancer controller"
diff --git a/test/prow/v2_6_0_ingclass.yaml b/test/prow/v2_6_0_ingclass.yaml
new file mode 100644
index 000000000..4369c3d35
--- /dev/null
+++ b/test/prow/v2_6_0_ingclass.yaml
@@ -0,0 +1,19 @@
+apiVersion: elbv2.k8s.aws/v1beta1
+kind: IngressClassParams
+metadata:
+  labels:
+    app.kubernetes.io/name: aws-load-balancer-controller
+  name: alb
+---
+apiVersion: networking.k8s.io/v1
+kind: IngressClass
+metadata:
+  labels:
+    app.kubernetes.io/name: aws-load-balancer-controller
+  name: alb
+spec:
+  controller: ingress.k8s.aws/alb
+  parameters:
+    apiGroup: elbv2.k8s.aws
+    kind: IngressClassParams
+    name: alb