diff --git a/lib/completion.d/ptools b/lib/completion.d/ptools
index 7b652ef..085c636 100644
--- a/lib/completion.d/ptools
+++ b/lib/completion.d/ptools
@@ -5,7 +5,7 @@ function __pdev_branches() {
     {
         git for-each-ref refs/heads/ --format='%(refname:short)'
         git for-each-ref "refs/remotes/$prefix" --format='%(refname:short)' | grep -F "$prefix" | cut -c $((${#prefix} + 1))-
-    } | csort -u |
+    } | LANG=C sort -u |
     grep -vF HEAD |
     grep -vF master |
     grep -v '^release-' |