diff --git a/tools/src/test/js/json-schema-functional-tests.js b/tools/src/test/js/json-schema-functional-tests.js
index 9dc1625c..dcf9bbbf 100644
--- a/tools/src/test/js/json-schema-functional-tests.js
+++ b/tools/src/test/js/json-schema-functional-tests.js
@@ -56,6 +56,7 @@ const ajv = new Ajv({
     strict: false,
     validateFormats: true,
     addUsedSchema: false,
+    loadSchema: (uri) => { throw new Error(`Remote schemas are disabled: ${uri}`) },
     schemas: {
         'http://cyclonedx.org/schema/spdx.schema.json': spdxSchema,
         'http://cyclonedx.org/schema/jsf-0.82.schema.json': jsfSchema,
diff --git a/tools/src/test/js/json-schema-lint-tests.js b/tools/src/test/js/json-schema-lint-tests.js
index b8411fcd..1a959c2d 100644
--- a/tools/src/test/js/json-schema-lint-tests.js
+++ b/tools/src/test/js/json-schema-lint-tests.js
@@ -52,6 +52,7 @@ function getAjv(strict) {
         addUsedSchema: false,
         allowUnionTypes: false,
         keywords: ["meta:enum"],
+        loadSchema: (uri) => { throw new Error(`Remote schemas are disabled: ${uri}`) },
         schemas: {
             'http://cyclonedx.org/schema/spdx.schema.json': spdxSchema,
             'http://cyclonedx.org/schema/jsf-0.82.schema.json': jsfSchema,