--- a/buildtools/wafsamba/wafsamba.py
+++ b/buildtools/wafsamba/wafsamba.py
@@ -108,7 +108,7 @@ def SAMBA_LIBRARY(bld, libname, source,
                   ldflags='',
                   external_library=False,
                   realname=None,
-                  keep_underscore=False,
+                  keep_underscore=True,
                   autoproto=None,
                   autoproto_extra_source='',
                   group='main',