diff --git a/src/vs/workbench/parts/debug/common/debug.ts b/src/vs/workbench/parts/debug/common/debug.ts
index 428e3599291..58765023a73 100644
--- a/src/vs/workbench/parts/debug/common/debug.ts
+++ b/src/vs/workbench/parts/debug/common/debug.ts
@@ -370,7 +370,7 @@ export interface IRawAdapter extends IRawEnvAdapter {
 	enableBreakpointsFor?: { languageIds: string[] };
 	configurationAttributes?: any;
 	configurationSnippets?: IJSONSchemaSnippet[];
-	initialConfigurations?: any[] | string;
+	initialConfigurations?: any[];
 	startSessionCommand?: string;
 	languages?: string[];
 	variables?: { [key: string]: string };
diff --git a/src/vs/workbench/parts/debug/electron-browser/debugConfigurationManager.ts b/src/vs/workbench/parts/debug/electron-browser/debugConfigurationManager.ts
index 612d2a9edfb..be682b111c5 100644
--- a/src/vs/workbench/parts/debug/electron-browser/debugConfigurationManager.ts
+++ b/src/vs/workbench/parts/debug/electron-browser/debugConfigurationManager.ts
@@ -556,7 +556,7 @@ class Launch implements ILaunch {
 				return this.configurationManager.guessAdapter(type).then(adapter => {
 					if (adapter) {
 						return this.configurationManager.provideDebugConfigurations(this.workspace.uri, adapter.type).then(initialConfigs => {
-							return adapter.getInitialConfigurationContent(this.workspace.uri, initialConfigs);
+							return adapter.getInitialConfigurationContent(initialConfigs);
 						});
 					} else {
 						return undefined;
diff --git a/src/vs/workbench/parts/debug/node/debugAdapter.ts b/src/vs/workbench/parts/debug/node/debugAdapter.ts
index a403b824a7c..e10a17619be 100644
--- a/src/vs/workbench/parts/debug/node/debugAdapter.ts
+++ b/src/vs/workbench/parts/debug/node/debugAdapter.ts
@@ -5,9 +5,7 @@
 
 import fs = require('fs');
 import path = require('path');
-import { parse } from 'vs/base/common/json';
 import * as nls from 'vs/nls';
-import uri from 'vs/base/common/uri';
 import { TPromise } from 'vs/base/common/winjs.base';
 import * as strings from 'vs/base/common/strings';
 import * as objects from 'vs/base/common/objects';
@@ -142,32 +140,7 @@ export class Adapter {
 		return !!this.rawAdapter.initialConfigurations;
 	}
 
-	public getInitialConfigurationContent(folderUri: uri, initialConfigs?: IConfig[]): TPromise<string> {
-		const editorConfig = this.configurationService.getConfiguration<any>();
-
-		// deprecated code: use DebugConfigurationProvider instead of command
-		if (typeof this.rawAdapter.initialConfigurations === 'string') {
-			// Contributed initialConfigurations is a command that needs to be invoked
-			// Debug adapter will dynamically provide the full launch.json
-			// TODO@Isidor stop supporting initialConfigurations
-			return this.commandService.executeCommand<string>(<string>this.rawAdapter.initialConfigurations, folderUri).then(content => {
-				// Debug adapter returned the full content of the launch.json - return it after format
-				try {
-					const config = parse(content);
-					config.configurations.push(...initialConfigs);
-					content = JSON.stringify(config, null, '\t').split('\n').map(line => '\t' + line).join('\n').trim();
-				} catch (e) {
-					// noop
-				}
-
-				if (editorConfig.editor && editorConfig.editor.insertSpaces) {
-					content = content.replace(new RegExp('\t', 'g'), strings.repeat(' ', editorConfig.editor.tabSize));
-				}
-				return content;
-			});
-		}
-		// end of deprecation
-
+	public getInitialConfigurationContent(initialConfigs?: IConfig[]): TPromise<string> {
 		// at this point we got some configs from the package.json and/or from registered DebugConfigurationProviders
 		let initialConfigurations = this.rawAdapter.initialConfigurations || [];
 		if (initialConfigs) {
@@ -175,7 +148,6 @@ export class Adapter {
 		}
 
 		const configs = JSON.stringify(initialConfigurations, null, '\t').split('\n').map(line => '\t' + line).join('\n').trim();
-
 		const comment1 = nls.localize('launch.config.comment1', "Use IntelliSense to learn about possible attributes.");
 		const comment2 = nls.localize('launch.config.comment2', "Hover to view descriptions of existing attributes.");
 		const comment3 = nls.localize('launch.config.comment3', "For more information, visit: {0}", 'https://go.microsoft.com/fwlink/?linkid=830387');
@@ -191,6 +163,7 @@ export class Adapter {
 		].join('\n');
 
 		// fix formatting
+		const editorConfig = this.configurationService.getConfiguration<any>();
 		if (editorConfig.editor && editorConfig.editor.insertSpaces) {
 			content = content.replace(new RegExp('\t', 'g'), strings.repeat(' ', editorConfig.editor.tabSize));
 		}
diff --git a/src/vs/workbench/parts/debug/test/node/debugAdapter.test.ts b/src/vs/workbench/parts/debug/test/node/debugAdapter.test.ts
index e65f7aa5193..8a44c4dba3e 100644
--- a/src/vs/workbench/parts/debug/test/node/debugAdapter.test.ts
+++ b/src/vs/workbench/parts/debug/test/node/debugAdapter.test.ts
@@ -126,7 +126,7 @@ suite('Debug - Adapter', () => {
 			'	]',
 			'}'].join('\n');
 
-		return adapter.getInitialConfigurationContent(null).then(content => {
+		return adapter.getInitialConfigurationContent().then(content => {
 			assert.equal(content, expected);
 		}, err => assert.fail());
 	});