diff --git a/packages/ajax/src/Ajax.js b/packages/ajax/src/Ajax.js
index d5267d157..4f84d66eb 100644
--- a/packages/ajax/src/Ajax.js
+++ b/packages/ajax/src/Ajax.js
@@ -72,14 +72,19 @@ export class Ajax {
       this.addRequestInterceptor(createXsrfRequestInterceptor(xsrfCookieName, xsrfHeaderName));
     }
 
-    const { cacheOptions } = this.__config;
-    if (cacheOptions.useCache || this.__config.addCaching) {
-      const { cacheRequestInterceptor, cacheResponseInterceptor } = createCacheInterceptors(
-        cacheOptions.getCacheIdentifier,
-        cacheOptions,
-      );
-      this.addRequestInterceptor(cacheRequestInterceptor);
-      this.addResponseInterceptor(cacheResponseInterceptor);
+    // eslint-disable-next-line prefer-destructuring
+    const cacheOptions = /** @type {import('@lion/ajax').CacheOptionsWithIdentifier} */ (
+      this.__config.cacheOptions
+    );
+    if ((cacheOptions && cacheOptions.useCache) || this.__config.addCaching) {
+      if (cacheOptions.getCacheIdentifier) {
+        const { cacheRequestInterceptor, cacheResponseInterceptor } = createCacheInterceptors(
+          cacheOptions.getCacheIdentifier,
+          cacheOptions,
+        );
+        this.addRequestInterceptor(cacheRequestInterceptor);
+        this.addResponseInterceptor(cacheResponseInterceptor);
+      }
     }
   }
 
diff --git a/packages/ajax/test/Ajax.test.js b/packages/ajax/test/Ajax.test.js
index 0b4c06412..c8b8ca53b 100644
--- a/packages/ajax/test/Ajax.test.js
+++ b/packages/ajax/test/Ajax.test.js
@@ -72,7 +72,10 @@ describe('Ajax', () => {
       // TODO: fix AjaxConfig types => e.g. create FullAjaxConfig with everything "mandatory" and then AjaxConfig (= Partial of it) for user
       // @ts-ignore
       const ajax1 = new Ajax(config);
-      const defaultCacheIdentifierFunction = ajax1.options?.cacheOptions?.getCacheIdentifier;
+
+      const defaultCacheIdentifierFunction = /** @type {() =>  void} */ (
+        ajax1.options?.cacheOptions?.getCacheIdentifier
+      );
       // Then
       expect(defaultCacheIdentifierFunction).not.to.be.undefined;
       expect(defaultCacheIdentifierFunction).to.be.a('function');