diff --git a/src/plugins/autotest/testrunner.cpp b/src/plugins/autotest/testrunner.cpp
index 7ab479dc0e3..dccaebaaf1d 100644
--- a/src/plugins/autotest/testrunner.cpp
+++ b/src/plugins/autotest/testrunner.cpp
@@ -295,7 +295,7 @@ static void processOutput(TestOutputReader *outputreader, const QString &msg,
                 break;
         }
         for (const QString &line : msg.mid(start).split('\n'))
-            outputreader->processOutput(line.toUtf8() + '\n');
+            outputreader->processOutput(line.toUtf8());
         break;
     }
     case Utils::OutputFormat::StdErrFormatSameLine: