diff --git a/tests/manual/process/main.cpp b/tests/manual/process/main.cpp
index 1baa479dd82..78222ffbd41 100644
--- a/tests/manual/process/main.cpp
+++ b/tests/manual/process/main.cpp
@@ -53,7 +53,6 @@ static int testSynchronous(const QString &cmd, const QStringList &args)
     p.start();
     if (!p.waitForStarted())
         return -2;
-    p.closeWriteChannel();
 
     QByteArray stdOut;
     QByteArray stdErr;