diff --git a/src/openrct2-ui/input/MouseInput.cpp b/src/openrct2-ui/input/MouseInput.cpp
index 6dca4b40c2..c3c2ec152a 100644
--- a/src/openrct2-ui/input/MouseInput.cpp
+++ b/src/openrct2-ui/input/MouseInput.cpp
@@ -618,7 +618,7 @@ static void InputScrollBegin(rct_window& w, WidgetIndex widgetIndex, const Scree
 
     _currentScrollArea = scroll_area;
     _currentScrollIndex = scroll_id;
-    window_event_unknown_15_call(&w, scroll_id, scroll_area);
+    window_event_scroll_select_call(&w, scroll_id, scroll_area);
     if (scroll_area == SCROLL_PART_VIEW)
     {
         window_event_scroll_mousedown_call(&w, scroll_id, scrollCoords);
diff --git a/src/openrct2-ui/windows/Ride.cpp b/src/openrct2-ui/windows/Ride.cpp
index 49e20f7774..e6af4f712f 100644
--- a/src/openrct2-ui/windows/Ride.cpp
+++ b/src/openrct2-ui/windows/Ride.cpp
@@ -628,7 +628,7 @@ static WindowEventList window_ride_graphs_events([](auto& events) {
     events.mouse_down = &WindowRideGraphsMousedown;
     events.update = &WindowRideGraphsUpdate;
     events.get_scroll_size = &WindowRideGraphsScrollgetheight;
-    events.unknown_15 = &WindowRideGraphs15;
+    events.scroll_select = &WindowRideGraphs15;
     events.tooltip = &WindowRideGraphsTooltip;
     events.invalidate = &WindowRideGraphsInvalidate;
     events.paint = &WindowRideGraphsPaint;
diff --git a/src/openrct2/interface/Window.cpp b/src/openrct2/interface/Window.cpp
index 6a842cd84a..25d48a962b 100644
--- a/src/openrct2/interface/Window.cpp
+++ b/src/openrct2/interface/Window.cpp
@@ -1574,11 +1574,12 @@ void window_event_viewport_rotate_call(rct_window* w)
             w->event_handlers->viewport_rotate(w);
 }
 
-void window_event_unknown_15_call(rct_window* w, int32_t scrollIndex, int32_t scrollAreaType)
+void window_event_scroll_select_call(rct_window* w, int32_t scrollIndex, int32_t scrollAreaType)
 {
-    if (w->event_handlers != nullptr)
-        if (w->event_handlers->unknown_15 != nullptr)
-            w->event_handlers->unknown_15(w, scrollIndex, scrollAreaType);
+    if (w->event_handlers == nullptr)
+        w->OnScrollSelect(scrollIndex, scrollAreaType);
+    else if (w->event_handlers->scroll_select != nullptr)
+        w->event_handlers->scroll_select(w, scrollIndex, scrollAreaType);
 }
 
 OpenRCT2String window_event_tooltip_call(rct_window* w, const WidgetIndex widgetIndex, const StringId fallback)
diff --git a/src/openrct2/interface/Window.h b/src/openrct2/interface/Window.h
index ae6ffd1bfe..a850da4865 100644
--- a/src/openrct2/interface/Window.h
+++ b/src/openrct2/interface/Window.h
@@ -241,7 +241,7 @@ struct WindowEventList
     void (*scroll_mouseover)(struct rct_window*, int32_t, const ScreenCoordsXY&){};
     void (*text_input)(struct rct_window*, WidgetIndex, char*){};
     void (*viewport_rotate)(struct rct_window*){};
-    void (*unknown_15)(struct rct_window*, int32_t, int32_t){};
+    void (*scroll_select)(struct rct_window*, int32_t, int32_t){};
     OpenRCT2String (*tooltip)(struct rct_window*, const WidgetIndex, const StringId){};
     void (*cursor)(struct rct_window*, WidgetIndex, const ScreenCoordsXY&, CursorID*){};
     void (*moved)(struct rct_window*, const ScreenCoordsXY&){};
@@ -685,7 +685,7 @@ void window_event_scroll_mousedrag_call(rct_window* w, int32_t scrollIndex, cons
 void window_event_scroll_mouseover_call(rct_window* w, int32_t scrollIndex, const ScreenCoordsXY& screenCoords);
 void window_event_textinput_call(rct_window* w, WidgetIndex widgetIndex, char* text);
 void window_event_viewport_rotate_call(rct_window* w);
-void window_event_unknown_15_call(rct_window* w, int32_t scrollIndex, int32_t scrollAreaType);
+void window_event_scroll_select_call(rct_window* w, int32_t scrollIndex, int32_t scrollAreaType);
 OpenRCT2String window_event_tooltip_call(rct_window* w, const WidgetIndex widgetIndex, const StringId fallback);
 CursorID window_event_cursor_call(rct_window* w, WidgetIndex widgetIndex, const ScreenCoordsXY& screenCoords);
 void window_event_moved_call(rct_window* w, const ScreenCoordsXY& screenCoords);
diff --git a/src/openrct2/interface/Window_internal.h b/src/openrct2/interface/Window_internal.h
index 2b09d0e036..b50219ee8f 100644
--- a/src/openrct2/interface/Window_internal.h
+++ b/src/openrct2/interface/Window_internal.h
@@ -157,6 +157,9 @@ struct rct_window
     {
         return {};
     }
+    virtual void OnScrollSelect(int32_t scrollIndex, int32_t scrollAreaType)
+    {
+    }
     virtual void OnScrollMouseDrag(int32_t scrollIndex, const ScreenCoordsXY& screenCoords)
     {
     }