diff --git a/reactos/base/applications/mspaint/scrollbox.cpp b/reactos/base/applications/mspaint/scrollbox.cpp
index 891d2dd871f..b0ef7373c78 100644
--- a/reactos/base/applications/mspaint/scrollbox.cpp
+++ b/reactos/base/applications/mspaint/scrollbox.cpp
@@ -114,3 +114,10 @@ LRESULT CScrollboxWindow::OnVScroll(UINT nMsg, WPARAM wParam, LPARAM lParam, BOO
     }
     return 0;
 }
+
+LRESULT CScrollboxWindow::OnLButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
+{
+    selectionWindow.ShowWindow(SW_HIDE);
+    pointSP = 0;    // resets the point-buffer of the polygon and bezier functions
+    return 0;
+}
diff --git a/reactos/base/applications/mspaint/scrollbox.h b/reactos/base/applications/mspaint/scrollbox.h
index cb261e254d7..bad3bc72090 100644
--- a/reactos/base/applications/mspaint/scrollbox.h
+++ b/reactos/base/applications/mspaint/scrollbox.h
@@ -15,11 +15,13 @@ public:
         MESSAGE_HANDLER(WM_SIZE, OnSize)
         MESSAGE_HANDLER(WM_HSCROLL, OnHScroll)
         MESSAGE_HANDLER(WM_VSCROLL, OnVScroll)
+        MESSAGE_HANDLER(WM_LBUTTONDOWN, OnLButtonDown)
     END_MSG_MAP()
 
     LRESULT OnSize(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
     LRESULT OnHScroll(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
     LRESULT OnVScroll(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
+    LRESULT OnLButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
 };
 
 void UpdateScrollbox();