diff --git a/src/vs/workbench/parts/experiments/electron-browser/experimentalPrompt.ts b/src/vs/workbench/parts/experiments/electron-browser/experimentalPrompt.ts
index cee00f6459079292f05c84ce76cc350466052faa..929ad930b63aa9ca2cd28dc18e6b3f326b9976f5 100644
--- a/src/vs/workbench/parts/experiments/electron-browser/experimentalPrompt.ts
+++ b/src/vs/workbench/parts/experiments/electron-browser/experimentalPrompt.ts
@@ -64,9 +64,7 @@ export class ExperimentalPrompts extends Disposable implements IWorkbenchContrib
 					logTelemetry(command.text);
 					if (command.externalLink) {
 						window.open(command.externalLink);
-						return;
-					}
-					if (command.curatedExtensionsKey && Array.isArray(command.curatedExtensionsList)) {
+					} else if (command.curatedExtensionsKey && Array.isArray(command.curatedExtensionsList)) {
 						this.viewletService.openViewlet('workbench.view.extensions', true)
 							.then(viewlet => viewlet as IExtensionsViewlet)
 							.then(viewlet => {
@@ -74,7 +72,6 @@ export class ExperimentalPrompts extends Disposable implements IWorkbenchContrib
 									viewlet.search('curated:' + command.curatedExtensionsKey);
 								}
 							});
-						return;
 					}
 
 					this.experimentService.markAsCompleted(experiment.id);
@@ -83,7 +80,10 @@ export class ExperimentalPrompts extends Disposable implements IWorkbenchContrib
 			};
 		});
 
-		this.notificationService.prompt(Severity.Info, actionProperties.promptText, choices, logTelemetry);
+		this.notificationService.prompt(Severity.Info, actionProperties.promptText, choices, () => {
+			logTelemetry();
+			this.experimentService.markAsCompleted(experiment.id);
+		});
 	}
 
 	dispose() {
diff --git a/src/vs/workbench/parts/experiments/test/electron-browser/experimentalPrompts.test.ts b/src/vs/workbench/parts/experiments/test/electron-browser/experimentalPrompts.test.ts
index 3edba678b818ff6cb2037877390d97e093a81a87..7cf755ae92d934eac640d4c4077c0f7c43698924 100644
--- a/src/vs/workbench/parts/experiments/test/electron-browser/experimentalPrompts.test.ts
+++ b/src/vs/workbench/parts/experiments/test/electron-browser/experimentalPrompts.test.ts
@@ -42,7 +42,7 @@ suite('Experimental Prompts', () => {
 				commands: [
 					{
 						text: 'Yes',
-						dontShowAgain: true
+						externalLink: 'https://code.visualstudio.com'
 					},
 					{
 						text: 'No'
@@ -88,7 +88,7 @@ suite('Experimental Prompts', () => {
 	});
 
 
-	test('Show experimental prompt if experiment should be run. Choosing an option should mark experiment as complete', () => {
+	test('Show experimental prompt if experiment should be run. Choosing option with link should mark experiment as complete', () => {
 
 		storageData = {
 			enabled: true,
@@ -111,4 +111,52 @@ suite('Experimental Prompts', () => {
 		});
 
 	});
+
+	test('Show experimental prompt if experiment should be run. Choosing negative option should mark experiment as complete', () => {
+
+		storageData = {
+			enabled: true,
+			state: ExperimentState.Run
+		};
+
+		instantiationService.stub(INotificationService, {
+			prompt: (a: Severity, b: string, c: IPromptChoice[], d) => {
+				assert.equal(b, promptText);
+				assert.equal(c.length, 2);
+				c[1].run();
+			}
+		});
+
+		experimentalPrompt = instantiationService.createInstance(ExperimentalPrompts);
+		onExperimentEnabledEvent.fire(experiment);
+
+		return TPromise.as(null).then(result => {
+			assert.equal(storageData['state'], ExperimentState.Complete);
+		});
+
+	});
+
+	test('Show experimental prompt if experiment should be run. Cancelling should mark experiment as complete', () => {
+
+		storageData = {
+			enabled: true,
+			state: ExperimentState.Run
+		};
+
+		instantiationService.stub(INotificationService, {
+			prompt: (a: Severity, b: string, c: IPromptChoice[], d) => {
+				assert.equal(b, promptText);
+				assert.equal(c.length, 2);
+				d();
+			}
+		});
+
+		experimentalPrompt = instantiationService.createInstance(ExperimentalPrompts);
+		onExperimentEnabledEvent.fire(experiment);
+
+		return TPromise.as(null).then(result => {
+			assert.equal(storageData['state'], ExperimentState.Complete);
+		});
+
+	});
 });
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