diff --git a/src/corelib/io/qiodevice.cpp b/src/corelib/io/qiodevice.cpp
index 924876b785..48f259e350 100644
--- a/src/corelib/io/qiodevice.cpp
+++ b/src/corelib/io/qiodevice.cpp
@@ -1470,6 +1470,7 @@ QByteArray QIODevice::readLine(qint64 maxSize)
     else
         result.resize(readBytes);
 
+    result.squeeze();
     return result;
 }