diff --git a/src/gsttools/qgstappsrc.cpp b/src/gsttools/qgstappsrc.cpp
index 148366b3e11eedab07e8b1db4bbea566df6792f3..561a96fc823dd834e8d1230307588cc15a3fe3c7 100644
--- a/src/gsttools/qgstappsrc.cpp
+++ b/src/gsttools/qgstappsrc.cpp
@@ -141,7 +141,7 @@ void QGstAppSrc::pushDataToAppSrc()
 
     if (m_dataRequested && !m_enoughData) {
         qint64 size;
-        if (m_dataRequestSize == ~0)
+        if (m_dataRequestSize == ~0u)
             size = qMin(m_stream->bytesAvailable(), queueSize());
         else
             size = qMin(m_stream->bytesAvailable(), (qint64)m_dataRequestSize);