diff --git a/libraries/ProcMeas/ProcMeas.h b/libraries/ProcMeas/ProcMeas.h
index e0b14eb39e112aee919620b74143b2df9adad6f8..84ade168eea2845f07a4ca568ec1b95329ded0d6 100644
--- a/libraries/ProcMeas/ProcMeas.h
+++ b/libraries/ProcMeas/ProcMeas.h
@@ -17,7 +17,7 @@
 #include "EulerAngles.h"
 
 //#define ProcMeasDebug
-
+#define RAD_TO_DEG 57.2957795
 typedef enum _PmState
 {
   pmInit,