diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8fa7df5..2f3b8d7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,7 +46,6 @@ find_package(catkin REQUIRED message_generation std_msgs)
 add_message_files(
   FILES
   AxisState.msg
-  AxisDelta.msg
   Proximity.msg
   AnalogVoltage.msg
 )
diff --git a/msg/AxisDelta.msg b/msg/AxisDelta.msg
deleted file mode 100644
index 58db60c..0000000
--- a/msg/AxisDelta.msg
+++ /dev/null
@@ -1,6 +0,0 @@
-# Reports the delta/difference between the current axis state and the prior axis state.
-
-Header header                   # Includes a timestamp and frame ID for the measurement.
-float64 delta_position          # The change in position of the axis in radians.
-float64 delta_velocity          # The change in velocity of the axis in radians/second.
-float64 delta_acceleration      # The change in acceleration of the axis in radians/second^2.
diff --git a/sensor_msgs_ext.pro b/sensor_msgs_ext.pro
index 42205a7..1014e7a 100644
--- a/sensor_msgs_ext.pro
+++ b/sensor_msgs_ext.pro
@@ -6,7 +6,6 @@ CONFIG -= qt
 DISTFILES += \
     CMakeLists.txt \
     msg/AnalogVoltage.msg \
-    msg/AxisDelta.msg \
     msg/AxisState.msg \
     msg/Proximity.msg \
     package.xml \