diff --git a/server/abstractport.cpp b/server/abstractport.cpp
index 8f3997d..55e31a3 100644
--- a/server/abstractport.cpp
+++ b/server/abstractport.cpp
@@ -319,7 +319,7 @@ _stop_no_more_pkts:
 void AbstractPort::updatePacketListInterleaved()
 {
     int numStreams = 0;
-    quint64 minGap = ULONG_LONG_MAX;
+    quint64 minGap = ULLONG_MAX;
     quint64 duration = quint64(1e9);
     QList<quint64> ibg1, ibg2;
     QList<quint64> nb1, nb2;