diff --git a/support/testing/infra/emulator.py b/support/testing/infra/emulator.py
index 0a77eb80fc..7ba1390ea5 100644
--- a/support/testing/infra/emulator.py
+++ b/support/testing/infra/emulator.py
@@ -77,6 +77,7 @@ class Emulator(object):
         self.qemu = pexpect.spawn(qemu_cmd[0], qemu_cmd[1:],
                                   timeout=5 * self.timeout_multiplier,
                                   encoding='utf-8',
+                                  codec_errors='replace',
                                   env={"QEMU_AUDIO_DRV": "none"})
         # We want only stdout into the log to avoid double echo
         self.qemu.logfile_read = self.logfile