diff --git a/src/definition/AtmosphereDefinition.cpp b/src/definition/AtmosphereDefinition.cpp
index 5ab7f1d..84e6280 100644
--- a/src/definition/AtmosphereDefinition.cpp
+++ b/src/definition/AtmosphereDefinition.cpp
@@ -7,6 +7,7 @@
 
 AtmosphereDefinition::AtmosphereDefinition(DefinitionNode *parent)
     : DefinitionNode(parent, "atmosphere", "atmosphere") {
+    model = ATMOSPHERE_MODEL_DISABLED;
     godrays = new GodRaysDefinition(this);
     daytime = new FloatNode(this, "daytime");
     humidity = new FloatNode(this, "humidity");
diff --git a/src/render/opengl/OpenGLSharedState.cpp b/src/render/opengl/OpenGLSharedState.cpp
index f374277..f5a9d8c 100644
--- a/src/render/opengl/OpenGLSharedState.cpp
+++ b/src/render/opengl/OpenGLSharedState.cpp
@@ -3,6 +3,13 @@
 OpenGLSharedState::OpenGLSharedState() {
 }
 
+paysages::opengl::OpenGLSharedState::~OpenGLSharedState()
+{
+    for (const auto &pair : variables) {
+        delete pair.second;
+    }
+}
+
 void OpenGLSharedState::apply(OpenGLShaderProgram *program, int &texture_unit) {
     for (const auto &pair : variables) {
         pair.second->apply(program, texture_unit);
@@ -11,7 +18,7 @@ void OpenGLSharedState::apply(OpenGLShaderProgram *program, int &texture_unit) {
 
 OpenGLVariable *OpenGLSharedState::get(const std::string &name) {
     OpenGLVariable *&var = variables[name];
-    if (var == 0) {
+    if (var == NULL) {
         var = new OpenGLVariable(name);
     }
     return var;
diff --git a/src/render/opengl/OpenGLSharedState.h b/src/render/opengl/OpenGLSharedState.h
index 8e206c7..095448c 100644
--- a/src/render/opengl/OpenGLSharedState.h
+++ b/src/render/opengl/OpenGLSharedState.h
@@ -15,6 +15,7 @@ namespace opengl {
 class OPENGLSHARED_EXPORT OpenGLSharedState {
   public:
     OpenGLSharedState();
+     ~OpenGLSharedState();
 
     /*!
      * \brief Apply the stored variables to the bound program.
diff --git a/src/system/Thread.cpp b/src/system/Thread.cpp
index ab9a7aa..fca9c37 100644
--- a/src/system/Thread.cpp
+++ b/src/system/Thread.cpp
@@ -3,6 +3,9 @@
 Thread::Thread(ThreadFunction function) : data(0), result(0), function(function) {
 }
 
+Thread::~Thread() {
+}
+
 void Thread::start(void *data) {
     this->data = data;
     QThread::start();
diff --git a/src/system/Thread.h b/src/system/Thread.h
index 61f9b9a..96fd96f 100644
--- a/src/system/Thread.h
+++ b/src/system/Thread.h
@@ -24,6 +24,8 @@ class SYSTEMSHARED_EXPORT Thread : private QThread {
      */
     Thread(ThreadFunction function = 0);
 
+    virtual ~Thread();
+
     /**
      * Start the thread, with custom data.
      */
diff --git a/src/tests/GodRaysSampler_Test.cpp b/src/tests/GodRaysSampler_Test.cpp
index 7e156e6..8ac3de4 100644
--- a/src/tests/GodRaysSampler_Test.cpp
+++ b/src/tests/GodRaysSampler_Test.cpp
@@ -60,6 +60,7 @@ TEST(GodRaysSampler, setQuality) {
 class GodRayLightSource : public LightSource {
     virtual bool getLightsAt(std::vector<LightComponent> &result, const Vector3 &location) const override {
         LightComponent light;
+        light.direction = VECTOR_DOWN;
         light.altered = true;
         light.color = Color(fabs(location.x), fabs(location.y), fabs(location.z));
         result.push_back(light);
diff --git a/src/tests/Layers_Test.cpp b/src/tests/Layers_Test.cpp
index 25d1419..8c8c06c 100644
--- a/src/tests/Layers_Test.cpp
+++ b/src/tests/Layers_Test.cpp
@@ -4,6 +4,7 @@
 #include "PackStream.h"
 #include "DiffManager.h"
 #include "IntNode.h"
+#include "DefinitionDiff.h"
 
 static DefinitionNode *_construc1(Layers *, const std::string &name) {
     return new DefinitionNode(NULL, name);
@@ -193,4 +194,8 @@ TEST(Layers, generateInitDiffs) {
     EXPECT_EQ("l1", layers1.getLayer(0)->getName());
     EXPECT_EQ("l2", layers1.getLayer(1)->getName());
     EXPECT_EQ("l3", layers1.getLayer(2)->getName());
+
+    for (auto diff : diffs) {
+        delete diff;
+    }
 }