diff --git a/Jamulus.pro b/Jamulus.pro
index c594288a..fb71108b 100755
--- a/Jamulus.pro
+++ b/Jamulus.pro
@@ -106,6 +106,10 @@ win32 {
     # we want to compile with C++11
     QMAKE_CXXFLAGS += -std=c++11
 
+    # we assume to have lrintf() one moderately modern linux distributions
+    # would be better to have that tested, though
+    DEFINES += HAVE_LRINTF
+
     # we assume that stdint.h is always present in a Linux system
     DEFINES += HAVE_STDINT_H
 
diff --git a/libs/opus/src/mlp.c b/libs/opus/src/mlp.c
index 46386026..b8a4e568 100644
--- a/libs/opus/src/mlp.c
+++ b/libs/opus/src/mlp.c
@@ -75,17 +75,17 @@ static OPUS_INLINE float tansig_approx(float x)
         return 1;
     if (!(x>-8))
         return -1;
-	if (x<0)
-	{
-	   x=-x;
-	   sign=-1;
-	}
-	i = (int)floor(.5f+25*x);
-	x -= .04f*i;
-	y = tansig_table[i];
-	dy = 1-y*y;
-	y = y + x*dy*(1 - y*x);
-	return sign*y;
+    if (x<0)
+    {
+        x=-x;
+        sign=-1;
+    }
+    i = (int)floor(.5f+25*x);
+    x -= .04f*i;
+    y = tansig_table[i];
+    dy = 1-y*y;
+    y = y + x*dy*(1 - y*x);
+    return sign*y;
 }
 #endif
 
diff --git a/src/connectdlg.cpp b/src/connectdlg.cpp
index ee7fa8f6..0f5eac42 100755
--- a/src/connectdlg.cpp
+++ b/src/connectdlg.cpp
@@ -536,15 +536,15 @@ void CConnectDlg::SetPingTimeAndNumClientsResult ( CHostAddress&
         switch ( ePingTimeLEDColor )
         {
         case CMultiColorLED::RL_GREEN:
-            pCurListViewItem->setTextColor ( 1, Qt::darkGreen );
+            pCurListViewItem->setForeground ( 1, Qt::darkGreen );
             break;
 
         case CMultiColorLED::RL_YELLOW:
-            pCurListViewItem->setTextColor ( 1, Qt::darkYellow );
+            pCurListViewItem->setForeground ( 1, Qt::darkYellow );
             break;
 
         default: // including "CMultiColorLED::RL_RED"
-            pCurListViewItem->setTextColor ( 1, Qt::red );
+            pCurListViewItem->setForeground ( 1, Qt::red );
             break;
         }
 
diff --git a/src/serverlist.h b/src/serverlist.h
index 4528ad6b..c7f5e9a0 100755
--- a/src/serverlist.h
+++ b/src/serverlist.h
@@ -62,7 +62,7 @@ private network.
 #include <QObject>
 #include <QLocale>
 #include <QList>
-#include <QTimer>
+#include <QElapsedTimer>
 #include <QMutex>
 #include "global.h"
 #include "util.h"
@@ -116,7 +116,7 @@ public:
 
 public:
     // time on which the entry was registered
-    QTime RegisterTime;
+    QElapsedTimer RegisterTime;
 };
 
 class CServerListManager : public QObject
diff --git a/src/util.h b/src/util.h
index ac646f3b..323f136d 100755
--- a/src/util.h
+++ b/src/util.h
@@ -114,6 +114,8 @@ public:
     CVector ( const int   iNeSi,
               const TData tInVa ) { Init ( iNeSi, tInVa ); }
 
+    CVector ( CVector const& ) = default;
+
     void Init ( const int iNewSize );
 
     // use this init to give all elements a defined value
@@ -778,6 +780,8 @@ public:
                  ( CompChanInfo.eSkillLevel != eSkillLevel ) );
     }
 
+    CChannelCoreInfo& operator= ( const CChannelCoreInfo& ) = default;
+
     // fader tag text (channel name)
     QString          strName;