diff --git a/libraries/AP_OpticalFlow/OpticalFlow_backend.cpp b/libraries/AP_OpticalFlow/AP_OpticalFlow_Backend.cpp
similarity index 100%
rename from libraries/AP_OpticalFlow/OpticalFlow_backend.cpp
rename to libraries/AP_OpticalFlow/AP_OpticalFlow_Backend.cpp
diff --git a/libraries/AP_OpticalFlow/OpticalFlow_backend.h b/libraries/AP_OpticalFlow/AP_OpticalFlow_Backend.h
similarity index 100%
rename from libraries/AP_OpticalFlow/OpticalFlow_backend.h
rename to libraries/AP_OpticalFlow/AP_OpticalFlow_Backend.h