diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index 7ba45da1fd..08dfa63715 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -2337,7 +2337,7 @@ Application::Application(int& argc, char** argv, QElapsedTimer& startupTimer, bo
         DependencyManager::get<PickManager>()->setPrecisionPicking(rayPickID, value);
     });
 
-    EntityItem::setBillboardRotationOperator([this](const glm::vec3& position, const glm::quat& rotation, BillboardMode billboardMode, const glm::vec3& frustumPos) {
+    EntityItem::setBillboardRotationOperator([](const glm::vec3& position, const glm::quat& rotation, BillboardMode billboardMode, const glm::vec3& frustumPos) {
         if (billboardMode == BillboardMode::YAW) {
             //rotate about vertical to face the camera
             glm::vec3 dPosition = frustumPos - position;
@@ -2365,7 +2365,7 @@ Application::Application(int& argc, char** argv, QElapsedTimer& startupTimer, bo
 
     DependencyManager::get<UsersScriptingInterface>()->setKickConfirmationOperator([this] (const QUuid& nodeID) { userKickConfirmation(nodeID); });
 
-    render::entities::WebEntityRenderer::setAcquireWebSurfaceOperator([this](const QString& url, bool htmlContent, QSharedPointer<OffscreenQmlSurface>& webSurface, bool& cachedWebSurface) {
+    render::entities::WebEntityRenderer::setAcquireWebSurfaceOperator([=](const QString& url, bool htmlContent, QSharedPointer<OffscreenQmlSurface>& webSurface, bool& cachedWebSurface) {
         bool isTablet = url == TabletScriptingInterface::QML;
         if (htmlContent) {
             webSurface = DependencyManager::get<OffscreenQmlSurfaceCache>()->acquire(render::entities::WebEntityRenderer::QML);
@@ -2405,7 +2405,7 @@ Application::Application(int& argc, char** argv, QElapsedTimer& startupTimer, bo
         const uint8_t TABLET_FPS = 90;
         webSurface->setMaxFps(isTablet ? TABLET_FPS : DEFAULT_MAX_FPS);
     });
-    render::entities::WebEntityRenderer::setReleaseWebSurfaceOperator([this](QSharedPointer<OffscreenQmlSurface>& webSurface, bool& cachedWebSurface, std::vector<QMetaObject::Connection>& connections) {
+    render::entities::WebEntityRenderer::setReleaseWebSurfaceOperator([=](QSharedPointer<OffscreenQmlSurface>& webSurface, bool& cachedWebSurface, std::vector<QMetaObject::Connection>& connections) {
         QQuickItem* rootItem = webSurface->getRootItem();
 
         // Fix for crash in QtWebEngineCore when rapidly switching domains
diff --git a/interface/src/avatar/AvatarManager.cpp b/interface/src/avatar/AvatarManager.cpp
index 8274259922..ba1309d5b8 100755
--- a/interface/src/avatar/AvatarManager.cpp
+++ b/interface/src/avatar/AvatarManager.cpp
@@ -727,7 +727,7 @@ RayToAvatarIntersectionResult AvatarManager::findRayIntersectionVector(const Pic
                     boxHit._distance = FLT_MAX;
 
                     for (size_t i = 0; i < hit._boundJoints.size(); i++) {
-                        assert(hit._boundJoints[i] < multiSpheres.size());
+                        assert(hit._boundJoints[i] < (int)multiSpheres.size());
                         auto &mSphere = multiSpheres[hit._boundJoints[i]];
                         if (mSphere.isValid()) {
                             float boundDistance = FLT_MAX;
diff --git a/interface/src/ui/LoginDialog.cpp b/interface/src/ui/LoginDialog.cpp
index b4f504822f..459b224474 100644
--- a/interface/src/ui/LoginDialog.cpp
+++ b/interface/src/ui/LoginDialog.cpp
@@ -138,7 +138,7 @@ void LoginDialog::login(const QString& username, const QString& password) const
 void LoginDialog::loginThroughOculus() {
    qDebug() << "Attempting to login through Oculus";
     if (auto oculusPlatformPlugin = PluginManager::getInstance()->getOculusPlatformPlugin()) {
-       oculusPlatformPlugin->requestNonceAndUserID([this] (QString nonce, QString oculusID) {
+        oculusPlatformPlugin->requestNonceAndUserID([] (QString nonce, QString oculusID) {
             DependencyManager::get<AccountManager>()->requestAccessTokenWithOculus(nonce, oculusID);
         });
     }
diff --git a/libraries/animation/src/AnimVariant.h b/libraries/animation/src/AnimVariant.h
index eb9ebd33dd..a8bdb885e5 100644
--- a/libraries/animation/src/AnimVariant.h
+++ b/libraries/animation/src/AnimVariant.h
@@ -261,7 +261,7 @@ public:
                 qCDebug(animation) << "    " << pair.first << "=" << pair.second.getString();
                 break;
             default:
-                assert(("invalid AnimVariant::Type", false));
+                assert(false);
             }
         }
     }
diff --git a/libraries/entities/src/EntityItem.cpp b/libraries/entities/src/EntityItem.cpp
index a532064b6c..e1ede9192a 100644
--- a/libraries/entities/src/EntityItem.cpp
+++ b/libraries/entities/src/EntityItem.cpp
@@ -791,7 +791,7 @@ int EntityItem::readEntityDataFromBuffer(const unsigned char* data, int bytesLef
     bool otherOverwrites = overwriteLocalData && !weOwnSimulation;
     // calculate hasGrab once outside the lambda rather than calling it every time inside
     bool hasGrab = stillHasGrabAction();
-    auto shouldUpdate = [this, lastEdited, otherOverwrites, filterRejection, hasGrab](quint64 updatedTimestamp, bool valueChanged) {
+    auto shouldUpdate = [lastEdited, otherOverwrites, filterRejection, hasGrab](quint64 updatedTimestamp, bool valueChanged) {
         if (hasGrab) {
             return false;
         }
diff --git a/libraries/model-baker/src/model-baker/BuildDracoMeshTask.cpp b/libraries/model-baker/src/model-baker/BuildDracoMeshTask.cpp
index 2e378965de..25a45cefe5 100644
--- a/libraries/model-baker/src/model-baker/BuildDracoMeshTask.cpp
+++ b/libraries/model-baker/src/model-baker/BuildDracoMeshTask.cpp
@@ -52,7 +52,7 @@ std::vector<hifi::ByteArray> createMaterialList(const hfm::Mesh& mesh) {
 }
 
 std::unique_ptr<draco::Mesh> createDracoMesh(const hfm::Mesh& mesh, const std::vector<glm::vec3>& normals, const std::vector<glm::vec3>& tangents, const std::vector<hifi::ByteArray>& materialList) {
-    Q_ASSERT(normals.size() == 0 || normals.size() == mesh.vertices.size());
+    Q_ASSERT(normals.size() == 0 || (int)normals.size() == mesh.vertices.size());
     Q_ASSERT(mesh.colors.size() == 0 || mesh.colors.size() == mesh.vertices.size());
     Q_ASSERT(mesh.texCoords.size() == 0 || mesh.texCoords.size() == mesh.vertices.size());