diff --git a/src/DataFilter.h b/src/DataFilter.h
index 1520644c7..ef50da515 100644
--- a/src/DataFilter.h
+++ b/src/DataFilter.h
@@ -65,10 +65,6 @@ class Leaf {
             Leaf *l;
         } lvalue, rvalue;
         int op;
-
-    private:
-
-        SymbolDef symbol; // hold information about symbols
 };
 
 class DataFilter : public QObject
diff --git a/src/GcCalendarModel.h b/src/GcCalendarModel.h
index ada0d453c..c246682d4 100644
--- a/src/GcCalendarModel.h
+++ b/src/GcCalendarModel.h
@@ -63,8 +63,6 @@ private:
 
     QMap <QDate, QVector<int>* > dateToRows; // map a date to SQL rows
 
-    QxtScheduleView *rideNavigator;
-    QList<FieldDefinition> *fieldDefinitions;
     QList<QString> columns; // what columns in the sql model
     MainWindow *mainWindow;
     int filenameIndex, durationIndex, dateIndex, textIndex, colorIndex;
@@ -126,7 +124,7 @@ public slots:
 
 public:
 
-    GcCalendarModel(QWidget *parent, QList<FieldDefinition> *fields, MainWindow *main) : QAbstractProxyModel(parent), fieldDefinitions(fields), mainWindow(main) {
+    GcCalendarModel(QWidget *parent, QList<FieldDefinition> *, MainWindow *main) : QAbstractProxyModel(parent), mainWindow(main) {
         setParent(parent);
 
         QDate today = QDateTime::currentDateTime().date();
diff --git a/src/RealtimePlot.h b/src/RealtimePlot.h
index 081f6f4e0..98c6cb480 100644
--- a/src/RealtimePlot.h
+++ b/src/RealtimePlot.h
@@ -38,7 +38,6 @@ class Realtime30PwrData : public QwtSeriesData<QPointF>
 {
     int pwrCur_; 
     int &pwrCur;
-    double pwr30;
     double pwrData_[150];
     double (&pwrData)[150];
 
diff --git a/src/RideWindow.h b/src/RideWindow.h
index a547e7691..59a102c4e 100644
--- a/src/RideWindow.h
+++ b/src/RideWindow.h
@@ -72,7 +72,6 @@ public:
 class Rider
 {
 private:
-    Bike bike;
     Route route;
 
 };
@@ -86,15 +85,11 @@ class BikePhysicsEngine
     double weight; // kg rider + bike
     double wind; // head wind only
     double cda; // areo
-    double alt;
     double temp; // C
     double air; // air pressure
     double speed;
     double grade;
 
-    // calcuated values
-    double f_air;
-    double f_roll;
 protected:
 
     double calcFAir(double speed)
@@ -283,7 +278,6 @@ class RealtimeRider: public RiderBridge
     Q_OBJECT;
     //Route route;
     BikePhysicsEngine engine;
-    double prevMSecs;
 
 protected:
     int findCurrentPosition()
diff --git a/src/SlfParser.h b/src/SlfParser.h
index e389559de..713ea767b 100644
--- a/src/SlfParser.h
+++ b/src/SlfParser.h
@@ -48,12 +48,10 @@ private:
     int		wheelSize;
     double	samplingRate;
 
-    double	lastDistance;
     double	distance;
 
     int		lap;
     double	hr;
-    double      lastAltitude;
     double      alt;
     double	speed;
     double	rotations;
diff --git a/src/SmfParser.h b/src/SmfParser.h
index 219010dc1..4cc087d65 100644
--- a/src/SmfParser.h
+++ b/src/SmfParser.h
@@ -45,18 +45,6 @@ private:
     QDateTime	start_time;
     QDateTime	last_time;
     QDateTime	time;
-    double	lastDistance;
-    double	distance;
-
-    int		lap;
-    double	power;
-    double	cadence;
-    double	hr;
-    double      lastAltitude;
-    double      alt;
-    double      lat;
-    double      lon;
-    double      headwind;
 };
 
 #endif // _SmfParser_h
diff --git a/src/TcxParser.h b/src/TcxParser.h
index 73dea2b90..9dc9b12aa 100644
--- a/src/TcxParser.h
+++ b/src/TcxParser.h
@@ -61,7 +61,6 @@ private:
     double hr;
     double speed;
     double torque;
-    double lastAltitude;
     double alt;
     double lat;
     double lon;
diff --git a/src/WkoRideFile.cpp b/src/WkoRideFile.cpp
index c5a12bec4..be04ab65b 100644
--- a/src/WkoRideFile.cpp
+++ b/src/WkoRideFile.cpp
@@ -240,7 +240,7 @@ WkoParser::parseRawData(WKO_UCHAR *fb)
     for (i=0; WKO_GRAPHS[i] != '\0'; i++) {
         WKO_nullval[i] = nullvals(WKO_GRAPHS[i], version); // setup nullvalue
         if ((WKO_graphbits[i] = bitsize(WKO_GRAPHS[i], WKO_device, version)) == 0) { // setup & check field size
-            errors << ("Unknown channel " + WKO_GRAPHS[i]);
+            errors << QString("Unknown channel %1").arg(WKO_GRAPHS[i]);
             return (NULL);
         }
     }