diff --git a/packages/catalog-client/src/CatalogClient.ts b/packages/catalog-client/src/CatalogClient.ts
index af4262b842..a110cfacc7 100644
--- a/packages/catalog-client/src/CatalogClient.ts
+++ b/packages/catalog-client/src/CatalogClient.ts
@@ -20,6 +20,7 @@ import {
   parseEntityRef,
   stringifyEntityRef,
   stringifyLocationRef,
+  DEFAULT_NAMESPACE,
 } from '@backstage/catalog-model';
 import { ResponseError } from '@backstage/errors';
 import crossFetch from 'cross-fetch';
@@ -176,8 +177,8 @@ export class CatalogClient implements CatalogApi {
         return 0;
       }
 
-      const aRef = stringifyEntityRef(a);
-      const bRef = stringifyEntityRef(b);
+      const aRef = this.stringifySortingEntityRef(a);
+      const bRef = this.stringifySortingEntityRef(b);
       if (aRef < bRef) {
         return -1;
       }
@@ -504,4 +505,14 @@ export class CatalogClient implements CatalogApi {
 
     return await response.json();
   }
+
+  private stringifySortingEntityRef(ref: Entity): string {
+    const kind = ref.kind;
+    const namespace = ref.metadata.namespace ?? DEFAULT_NAMESPACE;
+    const name = ref.metadata.title || ref.metadata.name;
+
+    return `${kind.toLocaleLowerCase('en-US')}:${namespace.toLocaleLowerCase(
+      'en-US',
+    )}/${name.toLocaleLowerCase('en-US')}`;
+  }
 }