diff --git a/dsdl/uavcan/equipment/optical_flow/291.OpticalFlow.uavcan b/dsdl/uavcan/equipment/optical_flow/291.OpticalFlow.uavcan
deleted file mode 100644
index c6089fe696..0000000000
--- a/dsdl/uavcan/equipment/optical_flow/291.OpticalFlow.uavcan
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# X/Y velocities estimated by a simple downward looking optical flow sensor.
-#
-
-uavcan.Timestamp timestamp
-
-float16 linear_velocity_x
-float16 linear_velocity_y
-float16 linear_velocity_variance