diff --git a/docs/development/msp/msp_messages.json b/docs/development/msp/msp_messages.json
index 3b2ca053dc9..813575ba8bc 100644
--- a/docs/development/msp/msp_messages.json
+++ b/docs/development/msp/msp_messages.json
@@ -4920,9 +4920,9 @@
                     },
                     {
                         "name": "hwVersion",
-                        "ctype": "uint32_t",
-                        "desc": "GPS hardware version (`gpsState.hwVersion`). Values: 500=UBLOX5, 600=UBLOX6, 700=UBLOX7, 800=UBLOX8, 900=UBLOX9, 1000=UBLOX10, 0=UNKNOWN",
-                        "units": "Version code"
+                        "ctype": "uint8_t",
+                        "desc": "GPS hardware version bit-field: bits[7:6]=series (0b01=u-blox Neo/M), bits[5:0]=generation. E.g. 0x48=M8, 0x49=M9, 0x4A=M10, 0=unknown.",
+                        "units": ""
                     }
                 ]
             },