diff --git a/test/mavsdk_tests/process_helper.py b/test/mavsdk_tests/process_helper.py
index 761fc32e41..24ea86214d 100644
--- a/test/mavsdk_tests/process_helper.py
+++ b/test/mavsdk_tests/process_helper.py
@@ -53,7 +53,7 @@ class Runner:
             cwd=self.cwd,
             env=self.env,
             stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
             universal_newlines=True
         )