diff --git a/test/test_protocol.py b/test/test_protocol.py
index 4f6ae31..d3cd0b8 100644
--- a/test/test_protocol.py
+++ b/test/test_protocol.py
@@ -304,10 +304,10 @@ class Eis:
 
         if stdout:
             for line in stdout.split("\n"):
-                logger.info(line)
+                logger.info(f"stdout: {line}")
         if stderr:
             for line in stderr.split("\n"):
-                logger.info(line)
+                logger.info(f"stderr: {line}")
         self.process.wait()
         rc = self.process.returncode
         if rc not in [0, -signal.SIGTERM]: