diff --git a/internal/gatewayapi/testdata/httproutes-with-multiple-matches.in.yaml b/internal/gatewayapi/testdata/httproutes-with-multiple-matches.in.yaml
index 7c5e460375a9..1a09008fbc01 100644
--- a/internal/gatewayapi/testdata/httproutes-with-multiple-matches.in.yaml
+++ b/internal/gatewayapi/testdata/httproutes-with-multiple-matches.in.yaml
@@ -132,37 +132,37 @@ services:
       protocol: TCP
       targetPort: 8080
 endpointSlices:
-  - apiVersion: discovery.k8s.io/v1
-    kind: EndpointSlice
-    metadata:
-      name: endpointslice-service-1
-      namespace: envoy-gateway 
-      labels:
-        kubernetes.io/service-name: service-1 
-    addressType: IPv4
-    ports:
-      - name: http
-        protocol: TCP
-        port: 8080
-    endpoints:
-      - addresses:
-          - "7.7.7.7"
-        conditions:
-          ready: true
-  - apiVersion: discovery.k8s.io/v1
-    kind: EndpointSlice
-    metadata:
-      name: endpointslice-service-2
-      namespace: envoy-gateway 
-      labels:
-        kubernetes.io/service-name: service-2
-    addressType: IPv4
-    ports:
-      - name: http
-        protocol: TCP
-        port: 8080
-    endpoints:
-      - addresses:
-          - "8.8.8.8"
-        conditions:
-          ready: true            
+- apiVersion: discovery.k8s.io/v1
+  kind: EndpointSlice
+  metadata:
+    name: endpointslice-service-1
+    namespace: envoy-gateway 
+    labels:
+      kubernetes.io/service-name: service-1 
+  addressType: IPv4
+  ports:
+  - name: http
+    protocol: TCP
+    port: 8080
+  endpoints:
+  - addresses:
+    - "7.7.7.7"
+    conditions:
+      ready: true
+- apiVersion: discovery.k8s.io/v1
+  kind: EndpointSlice
+  metadata:
+    name: endpointslice-service-2
+    namespace: envoy-gateway 
+    labels:
+      kubernetes.io/service-name: service-2
+  addressType: IPv4
+  ports:
+  - name: http
+    protocol: TCP
+    port: 8080
+  endpoints:
+  - addresses:
+    - "8.8.8.8"
+    conditions:
+      ready: true