diff --git a/modules/gui/pymod/wrap_gui.cc b/modules/gui/pymod/wrap_gui.cc
index d8a26914f69537e50a11c03365e3d617a2491501..53dffcc83e05234c2b9f385abdb0549b6ead8b42 100644
--- a/modules/gui/pymod/wrap_gui.cc
+++ b/modules/gui/pymod/wrap_gui.cc
@@ -50,6 +50,7 @@ void export_Input();
 #ifdef OST_IMG_ENABLED
 void export_data_viewer();
 void export_overlay();
+void export_overlay_manager();
 #endif
 
 #include <boost/python/to_python_converter.hpp>
@@ -128,5 +129,6 @@ BOOST_PYTHON_MODULE(_gui)
   #if OST_IMG_ENABLED
   export_data_viewer();
   export_overlay();
+  export_overlay_manager();
   #endif
 }