diff --git a/SDP/SDP/SDP.py b/SDP/SDP/SDP.py
index f76db083c62ba439e010d7d04459e55cd068a368..1bf3ad45280fbf5e0b6c9d28e8e2bfa644f944aa 100644
--- a/SDP/SDP/SDP.py
+++ b/SDP/SDP/SDP.py
@@ -286,7 +286,7 @@ class SDP(Device):
     @fault_on_error
     def write_fpga_mask_RW(self, value):
         """Return the fpga_mask_RW attribute."""
-        self.attribute_mapping["fpga_mask_RW"].set_value(value.to_list())
+        self.attribute_mapping["fpga_mask_RW"].set_value(value.tolist())
         _fpga_mask_RW = value
         return
 
@@ -307,7 +307,7 @@ class SDP(Device):
     @fault_on_error
     def write_fpga_scrap_RW(self, value):
         """Return the fpga_scrap_RW attribute."""
-        self.attribute_mapping["fpga_scrap_RW"].set_value(value.to_list())
+        self.attribute_mapping["fpga_scrap_RW"].set_value(value.tolist())
         _fpga_scrap_RW = value
         return