1 files changed, 2 insertions, 2 deletions
diff --git a/tools/pyboard.py b/tools/pyboard.py
index c422b64ac..55cbe8384 100755
--- a/tools/pyboard.py
+++ b/tools/pyboard.py
@@ -235,9 +235,9 @@ class ProcessPtyToTerminal:
             preexec_fn=os.setsid,
             stdin=subprocess.PIPE,
             stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
         )
-        pty_line = self.subp.stderr.readline().decode("utf-8")
+        pty_line = self.subp.stdout.readline().decode("utf-8")
         m = re.search(r"/dev/pts/[0-9]+", pty_line)
         if not m:
             print("Error: unable to find PTY device in startup line:", pty_line)