diff --git a/Docs/README.xmlsound b/Docs/README.xmlsound
index 5cce58b75..599df78ca 100644
--- a/Docs/README.xmlsound
+++ b/Docs/README.xmlsound
@@ -202,8 +202,8 @@ Configuration description:
    <position>
         Specify the position of the sounds source relative to the
         aircraft center.  The coordinate system used is a right hand
-        coordinate system where +Z = left, -Z = right, +X = down, -X =
-        up, +Y = forward, -Y = aft.  Distances are in meters.
+        coordinate system where +Y = left, -Y = right, -Z = down, +Z =
+        up, -X = forward, +X = aft.  Distances are in meters.
         The volume calculation due to distance and orientation of the
         sounds source ONLY work on mono samples!