1 files changed, 4 insertions, 4 deletions
diff --git a/src/particle/particle.cpp b/src/particle/particle.cpp
index aeb79a1b1..4bf01207c 100644
--- a/src/particle/particle.cpp
+++ b/src/particle/particle.cpp
@@ -158,14 +158,14 @@ void Particle::updateSelf() restrict2
         }
     }
 
-    if (mRandomness > 0)
+    if (mRandomness >= 10)  // reduce useless calculations
     {
         const int rand2 = mRandomness * 2;
-        mVelocity.x += static_cast<float>(rand() % rand2 - mRandomness)
+        mVelocity.x += static_cast<float>(std::rand() % rand2 - mRandomness)
             / 1000.0F;
-        mVelocity.y += static_cast<float>(rand() % rand2 - mRandomness)
+        mVelocity.y += static_cast<float>(std::rand() % rand2 - mRandomness)
             / 1000.0F;
-        mVelocity.z += static_cast<float>(rand() % rand2 - mRandomness)
+        mVelocity.z += static_cast<float>(std::rand() % rand2 - mRandomness)
             / 1000.0F;
     }