diff --git a/tests/testthat.R b/tests/testthat.R
index 8698d91..5268305 100644
--- a/tests/testthat.R
+++ b/tests/testthat.R
@@ -1,2 +1,3 @@
 data.table::setDTthreads(1)
+Sys.setlocale("LC_MESSAGES",locale="C")
 if(require(testthat))test_check("nc")