diff --git a/src/openrct2/interface/Viewport.cpp b/src/openrct2/interface/Viewport.cpp
index a15d57a082..5df4c38c01 100644
--- a/src/openrct2/interface/Viewport.cpp
+++ b/src/openrct2/interface/Viewport.cpp
@@ -1678,8 +1678,8 @@ InteractionInfo get_map_coordinates_from_pos_window(rct_window* window, const Sc
         viewLoc += myviewport->viewPos;
         if (myviewport->zoom > 0)
         {
-            viewLoc.x &= (0xFFFF * myviewport->zoom) & 0xFFFF;
-            viewLoc.y &= (0xFFFF * myviewport->zoom) & 0xFFFF;
+            viewLoc.x &= (0xFFFFFFFF * myviewport->zoom) & 0xFFFFFFFF;
+            viewLoc.y &= (0xFFFFFFFF * myviewport->zoom) & 0xFFFFFFFF;
         }
         rct_drawpixelinfo dpi;
         dpi.x = viewLoc.x;