diff --git a/Source/Contents/Effects/Skills/ThrowEffects.cpp b/Source/Contents/Effects/Skills/ThrowEffects.cpp
index 89b8fa962..6062e52b3 100644
--- a/Source/Contents/Effects/Skills/ThrowEffects.cpp
+++ b/Source/Contents/Effects/Skills/ThrowEffects.cpp
@@ -568,9 +568,10 @@ void CVolcanoEffect::OnProcess() {
 
   for (auto it = this->particles.begin(); it != this->particles.end(); ++it) {
     CParticle* particle = *it;
-    particle->position.x = this->position[0];
-    particle->position.y = this->position[1];
-    particle->position.z = this->position[2];
+    vector3d& particlePosition = (*it)->position;
+    particlePosition.x = this->position[0];
+    particlePosition.y = this->position[1];
+    particlePosition.z = this->position[2];
 
     if (particle) {
       particle->scale += this->id == EF_GUMGANG2 ? 0.1f : 0.3f;