diff --git a/src/apps/mandelbrot/Mandelbrot.cpp b/src/apps/mandelbrot/Mandelbrot.cpp
index 6bf1012de9..539ce0b7ce 100644
--- a/src/apps/mandelbrot/Mandelbrot.cpp
+++ b/src/apps/mandelbrot/Mandelbrot.cpp
@@ -157,7 +157,7 @@ void FractalView::MouseDown(BPoint where)
 {
 	fSelecting = true;
 	fSelectStart = where;
-	GetMouse(NULL, &fMouseButtons);
+	GetMouse(&where, &fMouseButtons);
 }