diff --git a/tmtc/ploc_supervisor.py b/tmtc/ploc_supervisor.py
index 1d9770a..c9016fa 100644
--- a/tmtc/ploc_supervisor.py
+++ b/tmtc/ploc_supervisor.py
@@ -433,7 +433,7 @@ def pack_ploc_supv_commands(p: ServiceProviderParams):
         custom_data = bytearray()
         memory_id = int(input("Specify memory ID: "))
         start_address = int(input("Specify start address: 0x"), 16)
-        check_size = int(input("Specify check size: 0x"))
+        check_size = int(input("Specify check size: "))
         custom_data.extend(struct.pack("!B", memory_id))
         custom_data.extend(struct.pack("!I", start_address))
         custom_data.extend(struct.pack("!I", check_size))