diff --git a/hal/src/main/python/semiwrap/CANAPITypes.yml b/hal/src/main/python/semiwrap/CANAPITypes.yml
index 71dfdbe120..34fa349bda 100644
--- a/hal/src/main/python/semiwrap/CANAPITypes.yml
+++ b/hal/src/main/python/semiwrap/CANAPITypes.yml
@@ -3,9 +3,9 @@ strip_prefixes:
 
 enums:
   HAL_CANDeviceType:
-    value_prefix: HAL_CAN_Dev
+    value_prefix: HAL_CAN_DEV
   HAL_CANManufacturer:
-    value_prefix: HAL_CAN_Man
+    value_prefix: HAL_CAN_MAN
   HAL_CANFlags:
 classes:
   HAL_CANMessage: