diff --git a/src/QGC.cc b/src/QGC.cc
index 179d54f5905c1c1c06006a2a68f31fc01bba2f90..c30209f83b0ceb8ea992d4d465dd9f385838f53c 100644
--- a/src/QGC.cc
+++ b/src/QGC.cc
@@ -64,7 +64,7 @@ float limitAngleToPMPIf(float angle)
     else
     {
         // Approximate
-        angle = fmodf(angle, M_PI);
+        angle = fmodf(angle, (float) M_PI);
     }
 
     return angle;
diff --git a/src/QGC.h b/src/QGC.h
index 9a1b442d176de3bc7818d086c4cc2f8fa705880f..7f17bd143cb4ef2a6641e6120d56f3aec214252e 100644
--- a/src/QGC.h
+++ b/src/QGC.h
@@ -47,7 +47,7 @@ inline bool isnan(T value)
 template<typename T>
 inline bool isinf(T value)
 {
-    return std::numeric_limits<T>::has_infinity && (value == std::numeric_limits<T>::infinity() || (-1*value) == std::numeric_limits<T>::infinity());
+    return (value == std::numeric_limits<T>::infinity() || (-1*value) == std::numeric_limits<T>::infinity()) && std::numeric_limits<T>::has_infinity;
 }
 #else
 #include <cmath>
diff --git a/src/comm/MAVLinkSimulationMAV.cc b/src/comm/MAVLinkSimulationMAV.cc
index 519924400295bc10ae00d3200cb5aaeec0beca83..948fcecbd4cdf5cc7889159e41c223b2cfc8fafe 100644
--- a/src/comm/MAVLinkSimulationMAV.cc
+++ b/src/comm/MAVLinkSimulationMAV.cc
@@ -221,10 +221,10 @@ void MAVLinkSimulationMAV::mainloop()
         if (sys_mode & MAV_MODE_FLAG_DECODE_POSITION_HIL)
         {
             mavlink_hil_controls_t hil;
-            hil.roll_ailerons = 0.0;
-            hil.pitch_elevator = 0.05;
-            hil.yaw_rudder = 0.05;
-            hil.throttle = 0.6;
+            hil.roll_ailerons = 0.0f;
+            hil.pitch_elevator = 0.05f;
+            hil.yaw_rudder = 0.05f;
+            hil.throttle = 0.6f;
             // Encode the data (adding header and checksums, etc.)
             mavlink_msg_hil_controls_encode(systemid, MAV_COMP_ID_IMU, &ret, &hil);
             // And send it
diff --git a/src/uas/UASWaypointManager.cc b/src/uas/UASWaypointManager.cc
index e37bd25df5e7a997154785880dbc7e9fb7de8faa..4a274b4e6b06454f95c9087cce77a500930716b0 100644
--- a/src/uas/UASWaypointManager.cc
+++ b/src/uas/UASWaypointManager.cc
@@ -114,6 +114,9 @@ void UASWaypointManager::handleGlobalPositionChanged(UASInterface* mav, double l
 {
     Q_UNUSED(mav);
     Q_UNUSED(time);
+	Q_UNUSED(alt);
+	Q_UNUSED(lon);
+	Q_UNUSED(lat);
     if (waypointsEditable.count() > 0 && currentWaypointEditable && (currentWaypointEditable->getFrame() == MAV_FRAME_GLOBAL || currentWaypointEditable->getFrame() == MAV_FRAME_GLOBAL_RELATIVE_ALT))
     {
         // TODO FIXME Calculate distance
@@ -239,6 +242,7 @@ void UASWaypointManager::handleWaypointRequest(quint8 systemId, quint8 compId, m
 
 void UASWaypointManager::handleWaypointReached(quint8 systemId, quint8 compId, mavlink_mission_item_reached_t *wpr)
 {
+	Q_UNUSED(compId);
     if (!uas) return;
     if (systemId == uasid) {
         emit updateStatusString(QString("Reached waypoint %1").arg(wpr->seq));
diff --git a/src/ui/HSIDisplay.cc b/src/ui/HSIDisplay.cc
index 296e25d3e08e16c7335a5fc65bf7f1bfd0d1f3f2..0e260bf1af20886478237cad56b3ae7cfa1641a4 100644
--- a/src/ui/HSIDisplay.cc
+++ b/src/ui/HSIDisplay.cc
@@ -486,6 +486,11 @@ void HSIDisplay::updatePositionZControllerEnabled(bool enabled)
 
 void HSIDisplay::updateObjectPosition(unsigned int time, int id, int type, const QString& name, int quality, float bearing, float distance)
 {
+	Q_UNUSED(quality);
+	Q_UNUSED(name);
+	Q_UNUSED(type);
+	Q_UNUSED(id);
+	Q_UNUSED(time);
     // FIXME add multi-object support
     QPainter painter(this);
     QColor color(Qt::yellow);
diff --git a/src/ui/QGCMAVLinkInspector.cc b/src/ui/QGCMAVLinkInspector.cc
index 691f8bcceb8ca92dbbbfb64ba3e3b5bfb46317a3..d4c353c3b01d0bbd542d44fd12fc7906d4f76166 100644
--- a/src/ui/QGCMAVLinkInspector.cc
+++ b/src/ui/QGCMAVLinkInspector.cc
@@ -6,6 +6,9 @@
 
 #include <QDebug>
 
+const float QGCMAVLinkInspector::updateHzLowpass = 0.2f;
+const unsigned int QGCMAVLinkInspector::updateInterval = 1000U;
+
 QGCMAVLinkInspector::QGCMAVLinkInspector(MAVLinkProtocol* protocol, QWidget *parent) :
     QWidget(parent),
     ui(new Ui::QGCMAVLinkInspector)
diff --git a/src/ui/QGCMAVLinkInspector.h b/src/ui/QGCMAVLinkInspector.h
index f4751dd659a300fdc3c026bdf6c18cd0b947ab2f..4623b2436d273f2f059c4163fe2b85c1e3ac16ee 100644
--- a/src/ui/QGCMAVLinkInspector.h
+++ b/src/ui/QGCMAVLinkInspector.h
@@ -37,8 +37,8 @@ protected:
     // Update one message field
     void updateField(int msgid, int fieldid, QTreeWidgetItem* item);
 
-    static const unsigned int updateInterval = 1000;
-    static const float updateHzLowpass = 0.2f;
+    static const unsigned int updateInterval;
+    static const float updateHzLowpass;
 
 private:
     Ui::QGCMAVLinkInspector *ui;
diff --git a/src/ui/QGCRGBDView.cc b/src/ui/QGCRGBDView.cc
index de45d8065374e7e9ffc0267024b9cfb490a49405..ded4a4edac8b2a3808e8d99f0d8e364d36232f8b 100644
--- a/src/ui/QGCRGBDView.cc
+++ b/src/ui/QGCRGBDView.cc
@@ -265,5 +265,7 @@ void QGCRGBDView::updateData(UASInterface *uas)
     }
 
     glImage = QGLWidget::convertToGLFormat(fill);
+#else
+	Q_UNUSED(uas);
 #endif
 }
diff --git a/src/ui/map/QGCMapWidget.cc b/src/ui/map/QGCMapWidget.cc
index ed1b371c1f3093e301274e64d7cce05ba22021f4..2c5a7aa3e7e3034170388080c187bebc11b79f97 100644
--- a/src/ui/map/QGCMapWidget.cc
+++ b/src/ui/map/QGCMapWidget.cc
@@ -10,7 +10,7 @@ QGCMapWidget::QGCMapWidget(QWidget *parent) :
     mapcontrol::OPMapWidget(parent),
     currWPManager(NULL),
     firingWaypointChange(NULL),
-    maxUpdateInterval(2.1), // 2 seconds
+    maxUpdateInterval(2.1f), // 2 seconds
     followUAVEnabled(false),
     trailType(mapcontrol::UAVTrailType::ByTimeElapsed),
     trailInterval(2.0f),
diff --git a/src/ui/uas/UASListWidget.cc b/src/ui/uas/UASListWidget.cc
index faa136d3b0db284afd126956af5b3adb1257ef19..33bac7a584256d421e518c739cdde638db1d80f1 100644
--- a/src/ui/uas/UASListWidget.cc
+++ b/src/ui/uas/UASListWidget.cc
@@ -114,6 +114,7 @@ void UASListWidget::activeUAS(UASInterface* uas)
 
 void UASListWidget::removeUAS(UASInterface* uas)
 {
+	Q_UNUSED(uas);
 //    uasViews.remove(uas);
 //    listLayout->removeWidget(uasViews.value(uas));
 //    uasViews.value(uas)->deleteLater();