diff --git a/aegisub/src/video_slider.cpp b/aegisub/src/video_slider.cpp
index f2e808fe6..8844fa8f2 100644
--- a/aegisub/src/video_slider.cpp
+++ b/aegisub/src/video_slider.cpp
@@ -145,23 +145,17 @@ void VideoSlider::OnMouse(wxMouseEvent &event) {
 
 		c->videoController->JumpToFrame(val);
 	}
-	else if (event.GetWheelRotation() != 0) {
+	else if (event.GetWheelRotation() != 0 && ForwardMouseWheelEvent(this, event)) {
 		// If mouse is over the slider, use wheel to step by frames or keyframes (when Shift is held)
-		if (GetClientRect().Contains(event.GetX(), event.GetY())) {
-			if (event.ShiftDown())
-				if (event.GetWheelRotation() < 0)
-					cmd::call("video/frame/next/keyframe", c);
-				else
-					cmd::call("video/frame/prev/keyframe", c);
-			else {
-				SetValue(val + (event.GetWheelRotation() > 0 ? -1 : 1));
-				c->videoController->JumpToFrame(val);
-			}
+		if (event.ShiftDown())
+			if (event.GetWheelRotation() < 0)
+				cmd::call("video/frame/next/keyframe", c);
+			else
+				cmd::call("video/frame/prev/keyframe", c);
+		else {
+			SetValue(val + (event.GetWheelRotation() > 0 ? -1 : 1));
+			c->videoController->JumpToFrame(val);
 		}
-		else
-			// Forward Wheel to subs grid to scroll by line/page
-			if (c->subsGrid->GetClientRect().Contains(event.GetX(), event.GetY()))
-				c->subsGrid->GetEventHandler()->ProcessEvent(event);
 	}
 }