diff --git a/src/vs/workbench/contrib/tasks/browser/abstractTaskService.ts b/src/vs/workbench/contrib/tasks/browser/abstractTaskService.ts
index cec4dff9092e6e98dbf098075528e59657903142..7f8e5191ea9561ec6bc0522cf3c731f03a264faa 100644
--- a/src/vs/workbench/contrib/tasks/browser/abstractTaskService.ts
+++ b/src/vs/workbench/contrib/tasks/browser/abstractTaskService.ts
@@ -1054,8 +1054,8 @@ export abstract class AbstractTaskService extends Disposable implements ITaskSer
 			}
 		});
 		let resolver: ITaskResolver = {
-			resolve: (workspaceFolder: IWorkspaceFolder, alias: string) => {
-				let data = resolverData.get(workspaceFolder.uri.toString());
+			resolve: (uri: URI, alias: string) => {
+				let data = resolverData.get(uri.toString());
 				if (!data) {
 					return undefined;
 				}
@@ -1086,7 +1086,7 @@ export abstract class AbstractTaskService extends Disposable implements ITaskSer
 				{ reevaluateOnRerun: true },
 				{
 					identifier: id,
-					dependsOn: extensionTasks.map((extensionTask) => { return { workspaceFolder: extensionTask.getWorkspaceFolder()!, task: extensionTask._id }; }),
+					dependsOn: extensionTasks.map((extensionTask) => { return { uri: extensionTask.getWorkspaceFolder()!.uri, task: extensionTask._id }; }),
 					name: id,
 				}
 			);
@@ -1119,9 +1119,10 @@ export abstract class AbstractTaskService extends Disposable implements ITaskSer
 				}
 			}
 		});
+
 		return {
-			resolve: (workspaceFolder: IWorkspaceFolder, identifier: string | TaskIdentifier | undefined) => {
-				let data = resolverData.get(workspaceFolder.uri.toString());
+			resolve: (uri: URI, identifier: string | TaskIdentifier | undefined) => {
+				let data = uri ? resolverData.get(uri.toString()) : undefined;
 				if (!data || !identifier) {
 					return undefined;
 				}
@@ -1949,7 +1950,7 @@ export abstract class AbstractTaskService extends Disposable implements ITaskSer
 				let resolver = this.createResolver(grouped);
 				let folders = this.contextService.getWorkspace().folders;
 				for (let folder of folders) {
-					let task = resolver.resolve(folder, identifier);
+					let task = resolver.resolve(folder.uri, identifier);
 					if (task) {
 						this.run(task).then(undefined, reason => {
 							// eat the error, it has already been surfaced to the user and we don't care about it here
diff --git a/src/vs/workbench/contrib/tasks/browser/terminalTaskSystem.ts b/src/vs/workbench/contrib/tasks/browser/terminalTaskSystem.ts
index 62f8180824ba0cd6fffd2d188dddd638488ff8c0..6d975b4149de434625e10a1f76880086f36de6e8 100644
--- a/src/vs/workbench/contrib/tasks/browser/terminalTaskSystem.ts
+++ b/src/vs/workbench/contrib/tasks/browser/terminalTaskSystem.ts
@@ -347,7 +347,7 @@ export class TerminalTaskSystem implements ITaskSystem {
 		let promises: Promise<ITaskSummary>[] = [];
 		if (task.configurationProperties.dependsOn) {
 			for (const dependency of task.configurationProperties.dependsOn) {
-				let dependencyTask = resolver.resolve(dependency.workspaceFolder, dependency.task!);
+				let dependencyTask = resolver.resolve(dependency.uri, dependency.task!);
 				if (dependencyTask) {
 					let key = dependencyTask.getMapKey();
 					let promise = this.activeTasks[key] ? this.activeTasks[key].promise : undefined;
@@ -363,7 +363,7 @@ export class TerminalTaskSystem implements ITaskSystem {
 					this.log(nls.localize('dependencyFailed',
 						'Couldn\'t resolve dependent task \'{0}\' in workspace folder \'{1}\'',
 						Types.isString(dependency.task) ? dependency.task : JSON.stringify(dependency.task, undefined, 0),
-						dependency.workspaceFolder.name
+						dependency.uri.toString()
 					));
 					this.showOutput();
 				}
diff --git a/src/vs/workbench/contrib/tasks/common/taskConfiguration.ts b/src/vs/workbench/contrib/tasks/common/taskConfiguration.ts
index fa7fbeb3133329d9be7eb6757982d22419f2f66a..be9cb7c97fc4349153693bc689009967d8b339ee 100644
--- a/src/vs/workbench/contrib/tasks/common/taskConfiguration.ts
+++ b/src/vs/workbench/contrib/tasks/common/taskConfiguration.ts
@@ -1226,9 +1226,12 @@ namespace GroupKind {
 namespace TaskDependency {
 	export function from(this: void, external: string | TaskIdentifier, context: ParseContext): Tasks.TaskDependency | undefined {
 		if (Types.isString(external)) {
-			return { workspaceFolder: context.workspaceFolder, task: external };
+			return { uri: context.workspace && context.workspace.configuration ? context.workspace.configuration : context.workspaceFolder.uri, task: external };
 		} else if (TaskIdentifier.is(external)) {
-			return { workspaceFolder: context.workspaceFolder, task: Tasks.TaskDefinition.createTaskIdentifier(external as Tasks.TaskIdentifier, context.problemReporter) };
+			return {
+				uri: context.workspace && context.workspace.configuration ? context.workspace.configuration : context.workspaceFolder.uri,
+				task: Tasks.TaskDefinition.createTaskIdentifier(external as Tasks.TaskIdentifier, context.problemReporter)
+			};
 		} else {
 			return undefined;
 		}
diff --git a/src/vs/workbench/contrib/tasks/common/taskSystem.ts b/src/vs/workbench/contrib/tasks/common/taskSystem.ts
index 9c9654adbf663486282ac19ee9ee10fb37a6d6d2..887c3f288bf63e3809fbd19c966d58c277ddbaa2 100644
--- a/src/vs/workbench/contrib/tasks/common/taskSystem.ts
+++ b/src/vs/workbench/contrib/tasks/common/taskSystem.ts
@@ -93,7 +93,7 @@ export interface ITaskExecuteResult {
 }
 
 export interface ITaskResolver {
-	resolve(workspaceFolder: IWorkspaceFolder, identifier: string | KeyedTaskIdentifier | undefined): Task | undefined;
+	resolve(uri: URI, identifier: string | KeyedTaskIdentifier | undefined): Task | undefined;
 }
 
 export interface TaskTerminateResponse extends TerminateResponse {
diff --git a/src/vs/workbench/contrib/tasks/common/tasks.ts b/src/vs/workbench/contrib/tasks/common/tasks.ts
index 66a00708221e73fd4b2f806306b198f8d656cf95..0509e545b2dbd35386ff73b8f528732beb67eaab 100644
--- a/src/vs/workbench/contrib/tasks/common/tasks.ts
+++ b/src/vs/workbench/contrib/tasks/common/tasks.ts
@@ -8,7 +8,7 @@ import * as Types from 'vs/base/common/types';
 import * as resources from 'vs/base/common/resources';
 import { IJSONSchemaMap } from 'vs/base/common/jsonSchema';
 import * as Objects from 'vs/base/common/objects';
-import { UriComponents } from 'vs/base/common/uri';
+import { UriComponents, URI } from 'vs/base/common/uri';
 
 import { ProblemMatcher } from 'vs/workbench/contrib/tasks/common/problemMatcher';
 import { IWorkspaceFolder, IWorkspace } from 'vs/platform/workspace/common/workspace';
@@ -438,7 +438,7 @@ export interface KeyedTaskIdentifier extends TaskIdentifier {
 }
 
 export interface TaskDependency {
-	workspaceFolder: IWorkspaceFolder;
+	uri: URI;
 	task: string | KeyedTaskIdentifier | undefined;
 }