diff --git a/openbr/plugins/gui.cpp b/openbr/plugins/gui.cpp
index 0653eeb..ef50de3 100644
--- a/openbr/plugins/gui.cpp
+++ b/openbr/plugins/gui.cpp
@@ -719,6 +719,8 @@ public:
 
         dst = src;
 
+        if (!Globals->useGui)
+            return;
         if (src.empty())
             return;
 
@@ -771,6 +773,8 @@ public:
     RectMarkingWindow * trueWindow;
     void init()
     {
+        if (!Globals->useGui)
+            return;
         initActual<RectMarkingWindow>();
         trueWindow = dynamic_cast<RectMarkingWindow *> (this->window);
         trueWindow->setKeys(this->keys);