diff --git a/sdk/core/core-client-rest/CHANGELOG.md b/sdk/core/core-client-rest/CHANGELOG.md
index 0a0382bfc524..1a8244fd574b 100644
--- a/sdk/core/core-client-rest/CHANGELOG.md
+++ b/sdk/core/core-client-rest/CHANGELOG.md
@@ -1,11 +1,12 @@
 # Release History
 
-## 1.1.4 (Unreleased)
+## 1.1.4 (2023-07-06)
 
 ### Features Added
 
 - Add `timeout`, `onUploadProgress`, `onDownloadProgress`, `abortSignal`, `tracingOptions`, `onResponse` in the `RequestParameters` for better RLC user experience.
 - Add `OperationOptions` for better modular user experience.
+- Correctly handle `allowInsecureConnection` handling when `undefined` is passed in `RequestParameters`. See https://github.com/Azure/autorest.typescript/issues/1916 for details.
 
 ## 1.1.3 (2023-05-04)
 
diff --git a/sdk/core/core-client-rest/src/getClient.ts b/sdk/core/core-client-rest/src/getClient.ts
index 72cb1c047dfa..5240c6f4cfbc 100644
--- a/sdk/core/core-client-rest/src/getClient.ts
+++ b/sdk/core/core-client-rest/src/getClient.ts
@@ -162,13 +162,14 @@ function buildOperation(
   allowInsecureConnection?: boolean,
   httpClient?: HttpClient
 ): StreamableMethod {
+  allowInsecureConnection = options.allowInsecureConnection ?? allowInsecureConnection;
   return {
     then: function (onFulfilled, onrejected) {
       return sendRequest(
         method,
         url,
         pipeline,
-        { allowInsecureConnection, ...options },
+        { ...options, allowInsecureConnection },
         httpClient
       ).then(onFulfilled, onrejected);
     },
@@ -177,7 +178,7 @@ function buildOperation(
         method,
         url,
         pipeline,
-        { allowInsecureConnection, ...options },
+        { ...options, allowInsecureConnection },
         httpClient
       );
     },
@@ -186,7 +187,7 @@ function buildOperation(
         method,
         url,
         pipeline,
-        { allowInsecureConnection, ...options },
+        { ...options, allowInsecureConnection },
         httpClient
       );
     },
diff --git a/sdk/core/core-client-rest/test/getClient.spec.ts b/sdk/core/core-client-rest/test/getClient.spec.ts
index dbb0bf6d2cca..72d4bda184a1 100644
--- a/sdk/core/core-client-rest/test/getClient.spec.ts
+++ b/sdk/core/core-client-rest/test/getClient.spec.ts
@@ -6,6 +6,7 @@ import { getCachedDefaultHttpsClient } from "../src/clientHelpers";
 import { getClient } from "../src/getClient";
 import sinon from "sinon";
 import {
+  HttpClient,
   PipelinePolicy,
   PipelineRequest,
   PipelineResponse,
@@ -200,4 +201,40 @@ describe("getClient", () => {
     assert.isTrue(policies.indexOf(policy2) < policies.indexOf(retryPolicy));
     assert.isTrue(policies.indexOf(retryPolicy) < policies.indexOf(policy1));
   });
+
+  it("should use the client setting for `allowInsecureConnection` when the request setting is undefined", async () => {
+    const fakeHttpClient: HttpClient = {
+      sendRequest: async (request) => {
+        assert.isTrue(request.allowInsecureConnection);
+        return { headers: createHttpHeaders(), status: 200, request };
+      },
+    };
+
+    const client = getClient("https://example.org", {
+      allowInsecureConnection: true,
+      httpClient: fakeHttpClient,
+    });
+
+    await client.pathUnchecked("/foo").get({
+      allowInsecureConnection: undefined,
+    });
+  });
+
+  it("should not use the client setting for `allowInsecureConnection` when the request setting is false", async () => {
+    const fakeHttpClient: HttpClient = {
+      sendRequest: async (request) => {
+        assert.isFalse(request.allowInsecureConnection);
+        return { headers: createHttpHeaders(), status: 200, request };
+      },
+    };
+
+    const client = getClient("https://example.org", {
+      allowInsecureConnection: true,
+      httpClient: fakeHttpClient,
+    });
+
+    await client.pathUnchecked("/foo").get({
+      allowInsecureConnection: false,
+    });
+  });
 });