diff --git a/motorApp/MotorSrc/asynMotorAxis.cpp b/motorApp/MotorSrc/asynMotorAxis.cpp
index 5e2a098c..f83bf204 100644
--- a/motorApp/MotorSrc/asynMotorAxis.cpp
+++ b/motorApp/MotorSrc/asynMotorAxis.cpp
@@ -162,7 +162,7 @@ asynStatus asynMotorAxis::setIGain(double iGain)
 
 
 /** Set the derivative gain of the motor.
-  * \param[in] pGain The new derivative gain. */
+  * \param[in] dGain The new derivative gain. */
 asynStatus asynMotorAxis::setDGain(double dGain)
 {
   return asynSuccess;