diff --git a/src/vs/workbench/parts/debug/electron-browser/debugConfigurationManager.ts b/src/vs/workbench/parts/debug/electron-browser/debugConfigurationManager.ts
index 4e3f99ff320737aaf47a713971224f74aa946f48..be1a748794440fd742ee7e684ce884b0b90b1691 100644
--- a/src/vs/workbench/parts/debug/electron-browser/debugConfigurationManager.ts
+++ b/src/vs/workbench/parts/debug/electron-browser/debugConfigurationManager.ts
@@ -397,9 +397,9 @@ export class ConfigurationManager implements debug.IConfigurationManager {
 			const codeEditor = <ICommonCodeEditor>editor.getControl();
 			const model = codeEditor ? codeEditor.getModel() : undefined;
 			const language = model ? model.getLanguageIdentifier().language : undefined;
-			const adapter = this.adapters.filter(a => a.languages && a.languages.indexOf(language) >= 0).pop();
-			if (adapter) {
-				return TPromise.as(adapter);
+			const adapters = this.adapters.filter(a => a.languages && a.languages.indexOf(language) >= 0);
+			if (adapters.length === 1) {
+				return TPromise.as(adapters[0]);
 			}
 		}