diff --git a/Runtime/Weapon/CWaveBeam.cpp b/Runtime/Weapon/CWaveBeam.cpp
index a5ec16f65..15e646c09 100644
--- a/Runtime/Weapon/CWaveBeam.cpp
+++ b/Runtime/Weapon/CWaveBeam.cpp
@@ -54,7 +54,7 @@ void CWaveBeam::UpdateGunFx(bool shotSmoke, float dt, const CStateManager& mgr,
       }
     }
     if (x258_25_effectTimerActive && x24c_effectTimer > 0.f)
-      x24c_effectTimer -= 0.f;
+      x24c_effectTimer -= dt;
   }
   CGunWeapon::UpdateGunFx(shotSmoke, dt, mgr, xf);
 }
@@ -165,4 +165,4 @@ void CWaveBeam::Unload(CStateManager& mgr) {
 
 bool CWaveBeam::IsLoaded() const { return CGunWeapon::IsLoaded() && x258_24_loaded; }
 
-} // namespace metaforce
\ No newline at end of file
+} // namespace metaforce