diff --git a/src/main_gui.cpp b/src/main_gui.cpp
--- a/src/main_gui.cpp
+++ b/src/main_gui.cpp
@@ -152,6 +152,7 @@ bool DoZoomInOutWindow(ZoomStateChange h
 			w->viewport->scrollpos_y += vp->virtual_height >> 1;
 			w->viewport->dest_scrollpos_x = w->viewport->scrollpos_x;
 			w->viewport->dest_scrollpos_y = w->viewport->scrollpos_y;
+			w->viewport->follow_vehicle = INVALID_VEHICLE;
 			break;
 		case ZOOM_OUT:
 			if (vp->zoom == ZOOM_LVL_MAX) return false;
@@ -164,6 +165,7 @@ bool DoZoomInOutWindow(ZoomStateChange h
 
 			vp->virtual_width <<= 1;
 			vp->virtual_height <<= 1;
+			w->viewport->follow_vehicle = INVALID_VEHICLE;
 			break;
 	}
 	if (vp != NULL) { // the vp can be null when how == ZOOM_NONE