diff --git a/direct/src/distributed/AstronInternalRepository.py b/direct/src/distributed/AstronInternalRepository.py
index 51d0ff6e2d..ba06142a9f 100644
--- a/direct/src/distributed/AstronInternalRepository.py
+++ b/direct/src/distributed/AstronInternalRepository.py
@@ -81,7 +81,7 @@ def msgpack_encode(dg, element):
         # Python does not distinguish between floats and doubles, so we send
         # everything as a double in MsgPack:
         dg.addUint8(0xcb)
-        dg.addFloat64(element)
+        dg.addBeFloat64(element)
     else:
         raise TypeError('Encountered non-MsgPack-packable value: %r' % element)