diff --git a/src/corelib/io/qprocess_unix.cpp b/src/corelib/io/qprocess_unix.cpp
index 68b7a8bf9b..a849519635 100644
--- a/src/corelib/io/qprocess_unix.cpp
+++ b/src/corelib/io/qprocess_unix.cpp
@@ -925,6 +925,8 @@ bool QProcessPrivate::startDetached(qint64 *pid)
         closeChannel(&stdinChannel);
         closeChannel(&stdoutChannel);
         closeChannel(&stderrChannel);
+        qt_safe_close(pidPipe[0]);
+        qt_safe_close(pidPipe[1]);
         qt_safe_close(startedPipe[0]);
         qt_safe_close(startedPipe[1]);
         return false;