diff --git a/Marlin/servo.cpp b/Marlin/servo.cpp
index acb39ce43..7a1c2b8c6 100644
--- a/Marlin/servo.cpp
+++ b/Marlin/servo.cpp
@@ -58,6 +58,7 @@
 #include <Arduino.h>
 
 #include "servo.h"
+#include "utility.h"
 
 #define usToTicks(_us)    (( clockCyclesPerMicrosecond()* _us) / 8)     // converts microseconds to tick (assumes prescale of 8)  // 12 Aug 2009
 #define ticksToUs(_ticks) (( (unsigned)_ticks * 8)/ clockCyclesPerMicrosecond() ) // converts from ticks back to microseconds