Index: vcpx/repository/monotone.py
===================================================================
--- vcpx/repository/monotone.py	(revision 1380)
+++ vcpx/repository/monotone.py	(revision 1381)
@@ -430,5 +430,5 @@
 
         mtl = ExternalCommand(cwd=self.working_dir, command=cmd)
-        outstr = mtl.execute(stdout=PIPE, stderr=PIPE)
+        outstr = mtl.execute(stdout=PIPE, stderr=PIPE, LANG='POSIX')
         if mtl.exit_status:
             raise GetUpstreamChangesetsFailure(
@@ -865,5 +865,5 @@
             entries = ['.']
 
-        output, error = commit.execute(entries, stdout=PIPE, stderr=PIPE)
+        output, error = commit.execute(entries, stdout=PIPE, stderr=PIPE, LANG='POSIX')
 
         # monotone complaints if there are no changes from the last commit.