diff --git a/src/Main/FGManipulator.cxx b/src/Main/FGManipulator.cxx
index 499c843e3..9249892f6 100644
--- a/src/Main/FGManipulator.cxx
+++ b/src/Main/FGManipulator.cxx
@@ -99,6 +99,9 @@ static int osgToFGModifiers(int modifiers)
     if (modifiers & (osgGA::GUIEventAdapter::MODKEY_LEFT_ALT |
 		     osgGA::GUIEventAdapter::MODKEY_RIGHT_ALT))
 	result |= KEYMOD_ALT;
+    if (modifiers & (osgGA::GUIEventAdapter::MODKEY_LEFT_META |
+		     osgGA::GUIEventAdapter::MODKEY_RIGHT_META))
+	result |= KEYMOD_META;
     return result;
 }