diff --git a/interface/src/avatar/Hand.cpp b/interface/src/avatar/Hand.cpp
index 8f003d32d5..b4866c9478 100644
--- a/interface/src/avatar/Hand.cpp
+++ b/interface/src/avatar/Hand.cpp
@@ -206,8 +206,8 @@ void Hand::collideAgainstOurself() {
         }
         // ignoring everything below the parent of the parent of the last free joint
         int skipIndex = skeletonModel.getParentJointIndex(skeletonModel.getParentJointIndex(
-            skeletonModel.getLastFreeJointIndex((i == leftPalmIndex) ? skeletonModel.getLeftHandJointIndex() :
-                (i == rightPalmIndex) ? skeletonModel.getRightHandJointIndex() : -1)));
+            skeletonModel.getLastFreeJointIndex(((int)i == leftPalmIndex) ? skeletonModel.getLeftHandJointIndex() :
+                ((int)i == rightPalmIndex) ? skeletonModel.getRightHandJointIndex() : -1)));
 
         handCollisions.clear();
         if (_owningAvatar->findSphereCollisions(palm.getPosition(), scaledPalmRadius, handCollisions, skipIndex)) {
diff --git a/interface/src/ui/BandwidthDialog.cpp b/interface/src/ui/BandwidthDialog.cpp
index 15ca7c6423..8cefc9cf93 100644
--- a/interface/src/ui/BandwidthDialog.cpp
+++ b/interface/src/ui/BandwidthDialog.cpp
@@ -29,7 +29,7 @@ BandwidthDialog::BandwidthDialog(QWidget* parent, BandwidthMeter* model) :
     this->QDialog::setLayout(form);
 
     // Setup labels
-    for (int i = 0; i < BandwidthMeter::N_STREAMS; ++i) {
+    for (size_t i = 0; i < BandwidthMeter::N_STREAMS; ++i) {
         bool input = i % 2 == 0;
         BandwidthMeter::ChannelInfo& ch = _model->channelInfo(BandwidthMeter::ChannelIndex(i / 2));
         QLabel* label = _labels[i] = new QLabel();  
@@ -48,7 +48,7 @@ BandwidthDialog::BandwidthDialog(QWidget* parent, BandwidthMeter* model) :
 }
 
 BandwidthDialog::~BandwidthDialog() {
-    for (int i = 0; i < BandwidthMeter::N_STREAMS; ++i) {
+    for (size_t i = 0; i < BandwidthMeter::N_STREAMS; ++i) {
         delete _labels[i];
     }
 }
@@ -57,7 +57,7 @@ void BandwidthDialog::paintEvent(QPaintEvent* event) {
 
     // Update labels
     char strBuf[64];
-    for (int i = 0; i < BandwidthMeter::N_STREAMS; ++i) {
+    for (size_t i = 0; i < BandwidthMeter::N_STREAMS; ++i) {
         BandwidthMeter::ChannelIndex chIdx = BandwidthMeter::ChannelIndex(i / 2);
         bool input = i % 2 == 0;
         BandwidthMeter::ChannelInfo& ch = _model->channelInfo(chIdx);
diff --git a/interface/src/ui/LocalVoxelsOverlay.cpp b/interface/src/ui/LocalVoxelsOverlay.cpp
index 7eaf9ed5c5..9ad1428535 100644
--- a/interface/src/ui/LocalVoxelsOverlay.cpp
+++ b/interface/src/ui/LocalVoxelsOverlay.cpp
@@ -41,7 +41,7 @@ void LocalVoxelsOverlay::update(float deltatime) {
     }
     
     _tree->lockForRead();
-    if (_visible && _voxelCount != _tree->getOctreeElementsCount()) {
+    if (_visible && _voxelCount != (int)_tree->getOctreeElementsCount()) {
         _voxelCount = _tree->getOctreeElementsCount();
         _voxelSystem->forceRedrawEntireTree();
     }
diff --git a/libraries/octree/src/OctreeSceneStats.cpp b/libraries/octree/src/OctreeSceneStats.cpp
index e42fe17df0..5cf906d82d 100644
--- a/libraries/octree/src/OctreeSceneStats.cpp
+++ b/libraries/octree/src/OctreeSceneStats.cpp
@@ -925,7 +925,7 @@ void OctreeSceneStats::trackIncomingOctreePacket(const QByteArray& packet,
                 qDebug() << "(_incomingLastSequence - MAX_MISSING_SEQUENCE_OLD_AGE):" 
                                 << (_incomingLastSequence - MAX_MISSING_SEQUENCE_OLD_AGE);
             }
-            if (missingItem <= std::max(0, (_incomingLastSequence - MAX_MISSING_SEQUENCE_OLD_AGE))) {
+            if (missingItem <= (unsigned int)std::max(0, (int)_incomingLastSequence - (int)MAX_MISSING_SEQUENCE_OLD_AGE)) {
                 if (wantExtraDebugging) {
                     qDebug() << "pruning really old missing sequence:" << missingItem;
                 }
diff --git a/tests/physics/src/ShapeColliderTests.cpp b/tests/physics/src/ShapeColliderTests.cpp
index 79de9f9175..6d7e9a6db1 100644
--- a/tests/physics/src/ShapeColliderTests.cpp
+++ b/tests/physics/src/ShapeColliderTests.cpp
@@ -174,7 +174,7 @@ void ShapeColliderTests::sphereMissesCapsule() {
     CapsuleShape capsuleB(radiusB, halfHeightB);
 
     // give the capsule some arbirary transform
-    float angle = 37.8;
+    float angle = 37.8f;
     glm::vec3 axis = glm::normalize( glm::vec3(-7.f, 2.8f, 9.3f) );
     glm::quat rotation = glm::angleAxis(angle, axis);
     glm::vec3 translation(15.1f, -27.1f, -38.6f);