From 4d98e3f0a7a38dfc8bb73a0d308d92e402f50b84 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Tue, 18 Jul 2017 03:18:05 -0500
Subject: [PATCH] General cleanup

---
 Marlin/Marlin_main.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 26b7df639b..cec1293a10 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -12511,7 +12511,7 @@ void prepare_move_to_destination() {
 
 #endif // FAST_PWM_FAN
 
-float calculate_volumetric_multiplier(float diameter) {
+float calculate_volumetric_multiplier(const float diameter) {
   if (!volumetric_enabled || diameter == 0) return 1.0;
   return 1.0 / (M_PI * sq(diameter * 0.5));
 }