diff --git a/src/vs/workbench/parts/debug/common/debugModel.ts b/src/vs/workbench/parts/debug/common/debugModel.ts
index f15a2b56c4749b525743d1ec56b9c42d3a4000c9..47f1af00e50523d65e483b5a287260177e57a500 100644
--- a/src/vs/workbench/parts/debug/common/debugModel.ts
+++ b/src/vs/workbench/parts/debug/common/debugModel.ts
@@ -901,7 +901,7 @@ export class Model implements IModel {
 				const ebp = this.exceptionBreakpoints.filter(ebp => ebp.filter === d.filter).pop();
 				return new ExceptionBreakpoint(d.filter, d.label, ebp ? ebp.enabled : d.default);
 			});
-			this._onDidChangeBreakpoints.fire({});
+			this._onDidChangeBreakpoints.fire();
 		}
 	}
 
@@ -911,7 +911,7 @@ export class Model implements IModel {
 
 	public setBreakpointsActivated(activated: boolean): void {
 		this.breakpointsActivated = activated;
-		this._onDidChangeBreakpoints.fire({});
+		this._onDidChangeBreakpoints.fire();
 	}
 
 	public addBreakpoints(uri: uri, rawData: IBreakpointData[], fireEvent = true): IBreakpoint[] {
diff --git a/src/vs/workbench/parts/debug/electron-browser/breakpointWidget.ts b/src/vs/workbench/parts/debug/electron-browser/breakpointWidget.ts
index 7229bb4bf085fd2fba6d1dae17f881b243d52d9d..7104aa7254f524e901845b2fe5f5390699d4d455 100644
--- a/src/vs/workbench/parts/debug/electron-browser/breakpointWidget.ts
+++ b/src/vs/workbench/parts/debug/electron-browser/breakpointWidget.ts
@@ -80,7 +80,7 @@ export class BreakpointWidget extends ZoneWidget implements IPrivateBreakopintWi
 		}
 
 		this.toDispose.push(this.debugService.getModel().onDidChangeBreakpoints(e => {
-			if (this.breakpoint && e.removed && e.removed.indexOf(this.breakpoint) >= 0) {
+			if (this.breakpoint && e && e.removed && e.removed.indexOf(this.breakpoint) >= 0) {
 				this.dispose();
 			}
 		}));