diff --git a/src/engine/ContactSolver.cpp b/src/engine/ContactSolver.cpp
index 4beafb05..d9f6da25 100644
--- a/src/engine/ContactSolver.cpp
+++ b/src/engine/ContactSolver.cpp
@@ -42,7 +42,7 @@ const decimal ContactSolver::SLOP = decimal(0.01);
 ContactSolver::ContactSolver(MemoryManager& memoryManager, const WorldSettings& worldSettings)
               :mMemoryManager(memoryManager), mSplitLinearVelocities(nullptr),
                mSplitAngularVelocities(nullptr), mContactConstraints(nullptr),
-               mLinearVelocities(nullptr), mAngularVelocities(nullptr),
+               mContactPoints(nullptr), mLinearVelocities(nullptr), mAngularVelocities(nullptr),
                mIsSplitImpulseActive(true), mWorldSettings(worldSettings) {
 
 #ifdef IS_PROFILING_ACTIVE
diff --git a/src/engine/ContactSolver.h b/src/engine/ContactSolver.h
index ca5a9903..38961709 100644
--- a/src/engine/ContactSolver.h
+++ b/src/engine/ContactSolver.h
@@ -273,7 +273,6 @@ class ContactSolver {
         /// Memory manager
         MemoryManager& mMemoryManager;
 
-
         /// Split linear velocities for the position contact solver (split impulse)
         Vector3* mSplitLinearVelocities;
 
diff --git a/src/engine/Timer.cpp b/src/engine/Timer.cpp
index 536d35d0..3fd93bd1 100644
--- a/src/engine/Timer.cpp
+++ b/src/engine/Timer.cpp
@@ -30,7 +30,7 @@
 using namespace reactphysics3d;
 
 // Constructor
-Timer::Timer(double timeStep) : mTimeStep(timeStep), mLastUpdateTime(0), mIsRunning(false) {
+Timer::Timer(double timeStep) : mTimeStep(timeStep), mLastUpdateTime(0), mDeltaTime(0), mIsRunning(false) {
     assert(timeStep > 0.0);
 }
 
diff --git a/test/tests/collision/TestTriangleVertexArray.h b/test/tests/collision/TestTriangleVertexArray.h
index c4c3d53b..282b7d55 100644
--- a/test/tests/collision/TestTriangleVertexArray.h
+++ b/test/tests/collision/TestTriangleVertexArray.h
@@ -47,7 +47,7 @@ class TestTriangleVertexArray : public Test {
         double mVertices2[4*3];
         float mNormals2[4*3];
         uint mIndices1[6];
-        uint mIndices2[6];
+        short mIndices2[6];
         TriangleVertexArray* mTriangleVertexArray1;
         TriangleVertexArray* mTriangleVertexArray2;
 
diff --git a/testbed/src/Gui.cpp b/testbed/src/Gui.cpp
index be6e5b57..69b89852 100644
--- a/testbed/src/Gui.cpp
+++ b/testbed/src/Gui.cpp
@@ -39,7 +39,10 @@ double Gui::mCachedUpdateTime = 0;
 double Gui::mCachedPhysicsUpdateTime = 0;
 
 // Constructor
-Gui::Gui(TestbedApplication* app) : mApp(app), mSimulationPanel(nullptr) {
+Gui::Gui(TestbedApplication* app)
+    : mApp(app), mSimulationPanel(nullptr), mSettingsPanel(nullptr), mPhysicsPanel(nullptr),
+      mRenderingPanel(nullptr), mFPSLabel(nullptr), mFrameTimeLabel(nullptr), mPhysicsTimeLabel(nullptr)
+{
 
 }
 
diff --git a/testbed/src/Timer.cpp b/testbed/src/Timer.cpp
index 202a4d41..5c3e964f 100644
--- a/testbed/src/Timer.cpp
+++ b/testbed/src/Timer.cpp
@@ -28,7 +28,7 @@
 
 
 // Constructor
-Timer::Timer() : mIsRunning(false) {
+Timer::Timer() : mLastUpdateTime(0), mDeltaTime(0), mAccumulator(0), mIsRunning(false) {
 
 }