diff --git a/src/corelib/io/qwindowspipereader.cpp b/src/corelib/io/qwindowspipereader.cpp
index 64f21d5a92..cc407dbed9 100644
--- a/src/corelib/io/qwindowspipereader.cpp
+++ b/src/corelib/io/qwindowspipereader.cpp
@@ -165,11 +165,33 @@ void QWindowsPipeReader::notified(quint32 numberOfBytesRead, quint32 errorCode,
 {
     if (&overlapped != notifiedOverlapped)
         return;
-    if (!completeAsyncRead(numberOfBytesRead, errorCode)) {
+
+    switch (errorCode) {
+    case ERROR_SUCCESS:
+        break;
+    case ERROR_MORE_DATA:
+        // This is not an error. We're connected to a message mode
+        // pipe and the message didn't fit into the pipe's system
+        // buffer. We will read the remaining data in the next call.
+        break;
+    case ERROR_BROKEN_PIPE:
+    case ERROR_PIPE_NOT_CONNECTED:
         pipeBroken = true;
+        break;
+    default:
+        emit winError(errorCode, QLatin1String("QWindowsPipeReader::completeAsyncRead"));
+        pipeBroken = true;
+        break;
+    }
+
+    readSequenceStarted = false;
+    if (pipeBroken) {
         emit pipeClosed();
         return;
     }
+
+    actualReadBufferSize += numberOfBytesRead;
+    readBuffer.truncate(actualReadBufferSize);
     startAsyncRead();
     readyReadEmitted = true;
     emit readyRead();
@@ -232,36 +254,6 @@ void QWindowsPipeReader::startAsyncRead()
     }
 }
 
-/*!
-    \internal
-    Sets the correct size of the read buffer after a read operation.
-    Returns \c false, if an error occurred or the connection dropped.
- */
-bool QWindowsPipeReader::completeAsyncRead(DWORD bytesRead, DWORD errorCode)
-{
-    readSequenceStarted = false;
-
-    switch (errorCode) {
-    case ERROR_SUCCESS:
-        break;
-    case ERROR_MORE_DATA:
-        // This is not an error. We're connected to a message mode
-        // pipe and the message didn't fit into the pipe's system
-        // buffer. We will read the remaining data in the next call.
-        break;
-    case ERROR_BROKEN_PIPE:
-    case ERROR_PIPE_NOT_CONNECTED:
-        return false;
-    default:
-        emit winError(errorCode, QLatin1String("QWindowsPipeReader::completeAsyncRead"));
-        return false;
-    }
-
-    actualReadBufferSize += bytesRead;
-    readBuffer.truncate(actualReadBufferSize);
-    return true;
-}
-
 /*!
     \internal
     Returns the number of available bytes in the pipe.
diff --git a/src/corelib/io/qwindowspipereader_p.h b/src/corelib/io/qwindowspipereader_p.h
index 6eead60fd5..7651093b05 100644
--- a/src/corelib/io/qwindowspipereader_p.h
+++ b/src/corelib/io/qwindowspipereader_p.h
@@ -88,7 +88,6 @@ private Q_SLOTS:
     void notified(quint32 numberOfBytesRead, quint32 errorCode, OVERLAPPED *notifiedOverlapped);
 
 private:
-    bool completeAsyncRead(DWORD bytesRead, DWORD errorCode);
     DWORD checkPipeState();
 
 private: