1 files changed, 3 insertions, 0 deletions
diff --git a/tests/run-tests b/tests/run-tests
index ca2c376659..fd41931d35 100755
--- a/tests/run-tests
+++ b/tests/run-tests
@@ -17,6 +17,9 @@ else:
     CPYTHON3 = os.getenv('MICROPY_CPYTHON3', 'python3')
     MICROPYTHON = os.getenv('MICROPY_MICROPYTHON', '../unix/micropython')
 
+# Set PYTHONIOENCODING so that CPython will use utf-8 on systems which set another encoding in the locale
+os.environ['PYTHONIOENCODING']='utf-8'
+
 def rm_f(fname):
     if os.path.exists(fname):
         os.remove(fname)