diff --git a/src/collision/broadphase/DynamicAABBTree.cpp b/src/collision/broadphase/DynamicAABBTree.cpp
index de494f69..7efd86ac 100644
--- a/src/collision/broadphase/DynamicAABBTree.cpp
+++ b/src/collision/broadphase/DynamicAABBTree.cpp
@@ -32,7 +32,7 @@
 using namespace reactphysics3d;
 
 // Initialization of static variables
-constexpr int TreeNode::NULL_TREE_NODE = -1;
+const int TreeNode::NULL_TREE_NODE = -1;
 
 // Constructor
 DynamicAABBTree::DynamicAABBTree(decimal extraAABBGap) : mExtraAABBGap(extraAABBGap) {
diff --git a/src/constraint/BallAndSocketJoint.cpp b/src/constraint/BallAndSocketJoint.cpp
index 497a45dc..7a5fce1b 100644
--- a/src/constraint/BallAndSocketJoint.cpp
+++ b/src/constraint/BallAndSocketJoint.cpp
@@ -30,7 +30,7 @@
 using namespace reactphysics3d;
 
 // Static variables definition
-constexpr decimal BallAndSocketJoint::BETA = decimal(0.2);
+const decimal BallAndSocketJoint::BETA = decimal(0.2);
 
 // Constructor
 BallAndSocketJoint::BallAndSocketJoint(const BallAndSocketJointInfo& jointInfo)
diff --git a/src/constraint/FixedJoint.cpp b/src/constraint/FixedJoint.cpp
index 9ed31f01..8f0b105c 100644
--- a/src/constraint/FixedJoint.cpp
+++ b/src/constraint/FixedJoint.cpp
@@ -30,7 +30,7 @@
 using namespace reactphysics3d;
 
 // Static variables definition
-constexpr decimal FixedJoint::BETA = decimal(0.2);
+const decimal FixedJoint::BETA = decimal(0.2);
 
 // Constructor
 FixedJoint::FixedJoint(const FixedJointInfo& jointInfo)
diff --git a/src/constraint/HingeJoint.cpp b/src/constraint/HingeJoint.cpp
index 4b152caa..1634bf27 100644
--- a/src/constraint/HingeJoint.cpp
+++ b/src/constraint/HingeJoint.cpp
@@ -31,7 +31,7 @@
 using namespace reactphysics3d;
 
 // Static variables definition
-constexpr decimal HingeJoint::BETA = decimal(0.2);
+const decimal HingeJoint::BETA = decimal(0.2);
 
 // Constructor
 HingeJoint::HingeJoint(const HingeJointInfo& jointInfo)
diff --git a/src/constraint/SliderJoint.cpp b/src/constraint/SliderJoint.cpp
index efe7cbff..919d91c0 100644
--- a/src/constraint/SliderJoint.cpp
+++ b/src/constraint/SliderJoint.cpp
@@ -29,7 +29,7 @@
 using namespace reactphysics3d;
 
 // Static variables definition
-constexpr decimal SliderJoint::BETA = decimal(0.2);
+const decimal SliderJoint::BETA = decimal(0.2);
 
 // Constructor
 SliderJoint::SliderJoint(const SliderJointInfo& jointInfo)
diff --git a/src/engine/ContactSolver.cpp b/src/engine/ContactSolver.cpp
index a11cc2e9..331e8045 100644
--- a/src/engine/ContactSolver.cpp
+++ b/src/engine/ContactSolver.cpp
@@ -34,9 +34,9 @@ using namespace reactphysics3d;
 using namespace std;
 
 // Constants initialization
-constexpr decimal ContactSolver::BETA = decimal(0.2);
-constexpr decimal ContactSolver::BETA_SPLIT_IMPULSE = decimal(0.2);
-constexpr decimal ContactSolver::SLOP= decimal(0.01);
+const decimal ContactSolver::BETA = decimal(0.2);
+const decimal ContactSolver::BETA_SPLIT_IMPULSE = decimal(0.2);
+const decimal ContactSolver::SLOP= decimal(0.01);
 
 // Constructor
 ContactSolver::ContactSolver(const std::map<RigidBody*, uint>& mapBodyToVelocityIndex)