diff --git a/include/reactphysics3d/engine/PhysicsWorld.h b/include/reactphysics3d/engine/PhysicsWorld.h
index 0d564bd7..49973d96 100644
--- a/include/reactphysics3d/engine/PhysicsWorld.h
+++ b/include/reactphysics3d/engine/PhysicsWorld.h
@@ -395,7 +395,7 @@ class PhysicsWorld {
         Vector3 getGravity() const;
 
         /// Set the gravity vector of the world
-        void setGravity(Vector3& gravity);
+        void setGravity(const Vector3& gravity);
 
         /// Return if the gravity is on
         bool isGravityEnabled() const;
diff --git a/src/engine/PhysicsWorld.cpp b/src/engine/PhysicsWorld.cpp
index b188f635..19e55eab 100644
--- a/src/engine/PhysicsWorld.cpp
+++ b/src/engine/PhysicsWorld.cpp
@@ -975,7 +975,7 @@ void PhysicsWorld::setNbIterationsPositionSolver(uint nbIterations) {
 /**
  * @param gravity The gravity vector (in meter per seconds squared)
  */
-void PhysicsWorld::setGravity(Vector3& gravity) {
+void PhysicsWorld::setGravity(const Vector3& gravity) {
 
     mConfig.gravity = gravity;