diff --git a/src/vs/workbench/api/common/extensionHostMain.ts b/src/vs/workbench/api/common/extensionHostMain.ts
index e07d63c5c7c..f99e28f37ed 100644
--- a/src/vs/workbench/api/common/extensionHostMain.ts
+++ b/src/vs/workbench/api/common/extensionHostMain.ts
@@ -85,17 +85,26 @@ abstract class ErrorHandler {
 			return `${error.name || 'Error'}: ${error.message || ''}${stackTraceMessage}`;
 		}
 
+		let _wasWrapped = Symbol('prepareStackTrace wrapped');
 		let _prepareStackTrace = prepareStackTraceAndFindExtension;
+		Object.assign(_prepareStackTrace, { [_wasWrapped]: true });
 		Object.defineProperty(Error, 'prepareStackTrace', {
 			configurable: false,
 			get() {
 				return _prepareStackTrace;
 			},
 			set(v) {
+				if (v && (v as any)[_wasWrapped]) {
+					_prepareStackTrace = v;
+					return
+				}
+
 				_prepareStackTrace = function (error, stackTrace) {
 					prepareStackTraceAndFindExtension(error, stackTrace);
 					return v.call(Error, error, stackTrace);
 				};
+				
+				Object.assign(_prepareStackTrace, { [_wasWrapped]: true });
 			},
 		});