diff --git a/Sofa/framework/Core/src/sofa/core/objectmodel/Context.cpp b/Sofa/framework/Core/src/sofa/core/objectmodel/Context.cpp
index 1bc2b619271..108c09a24c7 100644
--- a/Sofa/framework/Core/src/sofa/core/objectmodel/Context.cpp
+++ b/Sofa/framework/Core/src/sofa/core/objectmodel/Context.cpp
@@ -136,7 +136,10 @@ void Context::copyContext(const Context& c)
 
 void Context::copySimulationContext(const Context& c)
 {
-    worldGravity_.setValue(c.getGravity());  ///< Gravity IN THE WORLD COORDINATE SYSTEM.
+    if (!worldGravity_.isSet())
+    {
+        worldGravity_.setValue(c.getGravity()); ///< Gravity IN THE WORLD COORDINATE SYSTEM.
+    }
     setDt(c.getDt());
     setTime(c.getTime());
     setAnimate(c.getAnimate());