diff --git a/src/vs/workbench/api/node/extHostDebugService.ts b/src/vs/workbench/api/node/extHostDebugService.ts
index 2ae91c279e14e6d7f449b0248ed252daac3a6444..b969522ba5e830d95d538e5495043ec6a03602f8 100644
--- a/src/vs/workbench/api/node/extHostDebugService.ts
+++ b/src/vs/workbench/api/node/extHostDebugService.ts
@@ -547,8 +547,8 @@ export class ExtHostVariableResolverService implements IConfigurationResolverSer
 			getConfigurationValue: (folderUri: URI, section: string) => {
 				return configuration.getConfiguration(undefined, folderUri).get<string>(section);
 			},
-			getEnvironmentService: (name: string): string => {
-				return undefined;
+			getExecPath: (): string | undefined => {
+				return undefined;	// does not exist in EH
 			},
 			getFilePath: (): string | undefined => {
 				const activeEditor = editors.activeEditor();
@@ -561,7 +561,6 @@ export class ExtHostVariableResolverService implements IConfigurationResolverSer
 				return undefined;
 			},
 			getSelectedText: (): string | undefined => {
-				debugger;
 				const activeEditor = editors.activeEditor();
 				if (activeEditor && !activeEditor.selection.isEmpty) {
 					return activeEditor.document.getText(activeEditor.selection);
diff --git a/src/vs/workbench/services/configurationResolver/electron-browser/configurationResolverService.ts b/src/vs/workbench/services/configurationResolver/electron-browser/configurationResolverService.ts
index 26c6ee9cf955d305a3d29fe6059b5276bf056580..080f600ce818316d3a31d5a26cb4302fbce38179 100644
--- a/src/vs/workbench/services/configurationResolver/electron-browser/configurationResolverService.ts
+++ b/src/vs/workbench/services/configurationResolver/electron-browser/configurationResolverService.ts
@@ -45,8 +45,8 @@ export class ConfigurationResolverService implements IConfigurationResolverServi
 			getConfigurationValue: (folderUri: uri, suffix: string) => {
 				return configurationService.getValue<string>(suffix, folderUri ? { resource: folderUri } : undefined);
 			},
-			getEnvironmentService: (name: string) => {
-				return environmentService[name];
+			getExecPath: () => {
+				return environmentService['execPath'];
 			},
 			getFilePath: (): string | undefined => {
 				let input = editorService.getActiveEditorInput();
diff --git a/src/vs/workbench/services/configurationResolver/node/variableResolver.ts b/src/vs/workbench/services/configurationResolver/node/variableResolver.ts
index 76c5a42311355610ae189a82cb2ab60e931b25cd..a8fc1e8b982a63afa6f3bc60e73201a94cfd96f7 100644
--- a/src/vs/workbench/services/configurationResolver/node/variableResolver.ts
+++ b/src/vs/workbench/services/configurationResolver/node/variableResolver.ts
@@ -17,7 +17,7 @@ export interface IVariableAccessor {
 	getFolderUri(folderName: string): uri | undefined;
 	getWorkspaceFolderCount(): number;
 	getConfigurationValue(folderUri: uri, section: string): string | undefined;
-	getEnvironmentService(name: string): string | undefined;
+	getExecPath(): string | undefined;
 	getFilePath(): string | undefined;
 	getSelectedText(): string | undefined;
 	getLineNumber(): string;
@@ -193,7 +193,11 @@ export class VariableResolver {
 							return basename.slice(0, basename.length - paths.extname(basename).length);
 
 						case 'execPath':
-							return this.accessor.getEnvironmentService('execPath');
+							const ep = this.accessor.getExecPath();
+							if (ep) {
+								return ep;
+							}
+							throw new Error(localize('canNotResolveExecPath', "'{0}' can not be resolved.", match));
 
 						default:
 							return match;