diff --git a/devices/SDP.py b/devices/SDP.py
index 10f222811c44ce53c06a70e8db65807ee5f1e1b6..94aae242c74473439d5e9155556e1350d8ffef6d 100644
--- a/devices/SDP.py
+++ b/devices/SDP.py
@@ -94,8 +94,8 @@ class SDP(hardware_device):
     tr_tod_R = attribute_wrapper(comms_annotation=["2:tr_tod_R"], datatype=numpy.uint64)
     tr_uptime_R = attribute_wrapper(comms_annotation=["2:tr_uptime_R"], datatype=numpy.uint64)
 
-    FPGA_firmware_version_R = attribute_wrapper(comms_annotation=["2:FPGA_firmware_version_R"], datatype=numpy.str_, dims=(16,))
-    FPGA_hardware_version_R = attribute_wrapper(comms_annotation=["2:FPGA_hardware_version_R "], datatype=numpy.str_, dims=(16,))
+    fpga_firmware_version_R = attribute_wrapper(comms_annotation=["2:fpga_firmware_version_R"], datatype=numpy.str_, dims=(16,))
+    fpga_hardware_version_R = attribute_wrapper(comms_annotation=["2:fpga_hardware_version_R "], datatype=numpy.str_, dims=(16,))
     tr_software_version_R = attribute_wrapper(comms_annotation=["2:tr_software_version_R"], datatype=numpy.str_)