diff --git a/src/vs/workbench/contrib/debug/browser/callStackView.ts b/src/vs/workbench/contrib/debug/browser/callStackView.ts
index bc5758380cd1f9a8d3ea49c5db71d758dbb883e3..4786ae44870e8c940816c4d47a3408bef2a8c499 100644
--- a/src/vs/workbench/contrib/debug/browser/callStackView.ts
+++ b/src/vs/workbench/contrib/debug/browser/callStackView.ts
@@ -144,7 +144,8 @@ export class CallStackView extends ViewletPanel {
 
 						return nls.localize('showMoreStackFrames2', "Show More Stack Frames");
 					}
-				}
+				},
+				expandOnlyOnTwistieClick: true
 			});
 
 		this.tree.setInput(this.debugService.getModel()).then(undefined, onUnexpectedError);