diff --git a/src/adapters/gumgum.js b/src/adapters/gumgum.js
index 551a49042f4..7434444d570 100644
--- a/src/adapters/gumgum.js
+++ b/src/adapters/gumgum.js
@@ -18,8 +18,7 @@ const GumgumAdapter = function GumgumAdapter() {
     topWindow = global.top;
     topScreen = topWindow.screen;
   } catch (error) {
-    utils.logError(error);
-    return;
+    return utils.logError(error);
   }
 
   function _callBids({ bids }) {
@@ -40,7 +39,7 @@ const GumgumAdapter = function GumgumAdapter() {
       const trackingId = params.inScreen;
       const nativeId   = params.native;
       const slotId     = params.inSlot;
-      const bid = {};
+      const bid        = { tmax: $$PREBID_GLOBAL$$.cbTimeout };
 
       /* slot/native ads need the placement id */
       switch (true) {
diff --git a/test/spec/adapters/gumgum_spec.js b/test/spec/adapters/gumgum_spec.js
index fe48ae3a3f4..58958373f94 100644
--- a/test/spec/adapters/gumgum_spec.js
+++ b/test/spec/adapters/gumgum_spec.js
@@ -114,6 +114,11 @@ describe('gumgum adapter', () => {
       endpointRequest.to.include('sh');
     });
 
+    it('should include the global bid timeout', () => {
+      const endpointRequest = expect(adLoader.loadScript.firstCall.args[0]);
+      endpointRequest.to.include(`tmax=${$$PREBID_GLOBAL$$.cbTimeout}`);
+    });
+
     it('should include the publisher identity', () => {
       const endpointRequest = expect(adLoader.loadScript.firstCall.args[0]);
       endpointRequest.to.include('t=' + TEST.PUBLISHER_IDENTITY);