diff --git a/motorApp/NewportSrc/AG_CONEX.h b/motorApp/NewportSrc/AG_CONEX.h
index 52105e90..8f692e5c 100644
--- a/motorApp/NewportSrc/AG_CONEX.h
+++ b/motorApp/NewportSrc/AG_CONEX.h
@@ -33,6 +33,8 @@ private:
   double currentPosition_;
   double positionOffset_;
   double encoderIncrement_;
+  double interpolationFactor_;
+  double stepSize_;
   double highLimit_;
   double lowLimit_;