diff --git a/app/widget/timebased/timebasedview.cpp b/app/widget/timebased/timebasedview.cpp
index 6576cf4b3..8f83970fb 100644
--- a/app/widget/timebased/timebasedview.cpp
+++ b/app/widget/timebased/timebasedview.cpp
@@ -133,6 +133,8 @@ void TimeBasedView::ZoomIntoCursorPosition(QWheelEvent *event, double scale_mult
 
 void TimeBasedView::SetYScale(const double &y_scale)
 {
+  Q_ASSERT(y_scale > 0);
+
   y_scale_ = y_scale;
 
   if (y_axis_enabled_) {