diff --git a/data/devices/device.example b/data/devices/device.example
index 83973489..87f39922 100644
--- a/data/devices/device.example
+++ b/data/devices/device.example
@@ -77,7 +77,10 @@ DpiRange=100:16000@100
 # Device quirks
 # Quirk=DOUBLE_DPI;STRIX_PROFILE
 
-[Driver/sinowealth/devices/ADeviceNameWithoutSpaces]
+# Replace `FEED` in the group name with firmware version of the device.
+# To find the right value, see the output of ratbagd and search a message like:
+# "ratbag error: Device with firmware version FEED is not supported"
+[Driver/sinowealth/devices/FEED]
 # Number of buttons.
 # Default to 0.
 Buttons=6
@@ -85,13 +88,6 @@ Buttons=6
 # Device name
 DeviceName=CoolVendor CoolMouse
 
-# Firmware version of the device.
-# This field is used for determining the mouse in the list.
-# If not specified, the entry will be ignored.
-# To find the right value, see the output of ratbagd and search a message like:
-# "ratbag error: Device with firmware version XXX is not supported"
-FwVersion=FEED
-
 # The order of LED pins on the mouse.
 # Change this to `RBG` if LED colors are weird.
 # Use `None` if there are no LEDs on the mouse.
diff --git a/data/devices/glorious-model-d.device b/data/devices/glorious-model-d.device
index 8d316b94..3a5a7ab4 100644
--- a/data/devices/glorious-model-d.device
+++ b/data/devices/glorious-model-d.device
@@ -4,9 +4,8 @@ DeviceMatch=usb:258a:0033
 DeviceType=mouse
 Driver=sinowealth
 
-[Driver/sinowealth/devices/GloriousModelD]
+[Driver/sinowealth/devices/V102]
 Buttons=6
 DeviceName=Glorious Model D
-FwVersion=V102
 LedType=RBG
 SensorType=PMW3360
diff --git a/data/devices/glorious-model-o.device b/data/devices/glorious-model-o.device
index 160cff70..ccbb8d8d 100644
--- a/data/devices/glorious-model-o.device
+++ b/data/devices/glorious-model-o.device
@@ -4,9 +4,8 @@ DeviceMatch=usb:258a:0036
 DeviceType=mouse
 Driver=sinowealth
 
-[Driver/sinowealth/devices/GloriousModelO]
+[Driver/sinowealth/devices/V103]
 Buttons=6
 DeviceName=Glorious Model O/O- (updated firmware)
-FwVersion=V103
 LedType=RBG
 SensorType=PMW3360
diff --git a/data/devices/sinowealth-0027.device b/data/devices/sinowealth-0027.device
index afe6ba55..4a5c50db 100644
--- a/data/devices/sinowealth-0027.device
+++ b/data/devices/sinowealth-0027.device
@@ -4,36 +4,32 @@ DeviceType=mouse
 Driver=sinowealth
 Name=SinoWealth Generic Mouse (0027)
 
-[Driver/sinowealth/devices/DreamMachinesDM5Blink]
+[Driver/sinowealth/devices/3106]
 Buttons=8
 DeviceName=DreamMachines DM5 Blink
-FwVersion=3106
 LedType=RGB
 SensorType=PMW3389
 
-[Driver/sinowealth/devices/GWolvesHatiHTM]
+[Driver/sinowealth/devices/V161]
 Buttons=6
 # Can be both `Ace` and `Classic` version.
 DeviceName=G-Wolves Hati HT-M Wired
-FwVersion=V161
 LedType=None
 # Can also be PMW3389
 SensorType=PMW3360
 
-[Driver/sinowealth/devices/GenesysXenon770]
+[Driver/sinowealth/devices/3110]
 # There are 5 main buttons.
 # Side buttons are detachable.
 # There can be either 3 or 9 buttons on the side.
 # Going for the maximum count: 5 + 9 = 14.
 Buttons=14
 DeviceName=Genesys Xenon 770
-FwVersion=3110
 LedType=RGB
 SensorType=PMW3327
 
-[Driver/sinowealth/devices/GloriousModelOOld]
+[Driver/sinowealth/devices/V102]
 Buttons=6
 DeviceName=Glorious Model O (old firmware)
-FwVersion=V102
 LedType=RBG
 SensorType=PMW3360
diff --git a/data/devices/sinowealth-0029.device b/data/devices/sinowealth-0029.device
index 05f76be0..dae0f961 100644
--- a/data/devices/sinowealth-0029.device
+++ b/data/devices/sinowealth-0029.device
@@ -6,9 +6,8 @@ Name=SinoWealth Generic Mouse (0029)
 
 # Configuration data size: 131 bytes.
 # https://github.com/libratbag/libratbag/issues/1361
-[Driver/sinowealth/devices/MachenikeM620]
+[Driver/sinowealth/devices/V127]
 Buttons=6
 DeviceName=Machenike M620
-FwVersion=V127
 LedType=RGB
 SensorType=PMW3389
diff --git a/data/devices/sinowealth-0051.device b/data/devices/sinowealth-0051.device
index a07c9926..4051ab03 100644
--- a/data/devices/sinowealth-0051.device
+++ b/data/devices/sinowealth-0051.device
@@ -6,10 +6,9 @@ Name=Sinowealth Generic Mouse (0051)
 
 # Configuration data size: 123 bytes.
 # https://github.com/libratbag/libratbag/issues/1444.
-[Driver/sinowealth/devices/TDaggerImperialTTGM310]
+[Driver/sinowealth/devices/2642]
 Buttons=8
 DeviceName=T-Dagger Imperial T-TGM310
-FwVersion=2642
 LedType=RGB
 Profiles=2
 SensorType=PMW3212
diff --git a/data/devices/sinowealth-1007.device b/data/devices/sinowealth-1007.device
index f0dffa82..4ceb0fc7 100644
--- a/data/devices/sinowealth-1007.device
+++ b/data/devices/sinowealth-1007.device
@@ -6,18 +6,16 @@ Name=SinoWealth Generic Mouse (1007)
 
 # This does NOT work. See libratbag/libratbag#1296.
 # For future: ID of A3050 sensor is 0x2, and maximum DPI is 4000.
-#[Driver/sinowealth/devices/AntEsportsGM500]
+#[Driver/sinowealth/devices/0910]
 #Buttons=7
 #DeviceName=Ant Esports GM500
-#FwVersion=0910
 #LedType=RBG
 #SensorType=A3050
 
 # Configuration size: 123 bytes.
 # https://github.com/libratbag/libratbag/issues/1091
-[Driver/sinowealth/devices/MarvoScorpionG961]
+[Driver/sinowealth/devices/9677]
 Buttons=6
 DeviceName=Marvo Scorpion G961
-FwVersion=9677
 LedType=RGB
 SensorType=PMW3327
diff --git a/src/driver-sinowealth.c b/src/driver-sinowealth.c
index 89837c40..5cb0417f 100644
--- a/src/driver-sinowealth.c
+++ b/src/driver-sinowealth.c
@@ -117,8 +117,6 @@ _Static_assert(SINOWEALTH_NUM_PROFILES_MAX <= 3, "Too many profiles enabled");
 /* Maximum amount of real events in a macro. */
 #define SINOWEALTH_MACRO_LENGTH_MAX 168
 
-#define SINOWEALTH_FW_VERSION_LEN 4
-
 static const unsigned int SINOWEALTH_DEBOUNCE_TIMES[] = {
 	4, 6, 8, 10, 12, 14, 16
 };
diff --git a/src/driver-sinowealth.h b/src/driver-sinowealth.h
index 310f4e9f..018bfa9d 100644
--- a/src/driver-sinowealth.h
+++ b/src/driver-sinowealth.h
@@ -25,6 +25,8 @@
 
 #include "libratbag-util.h"
 
+#define SINOWEALTH_FW_VERSION_LEN 4
+
 enum sinowealth_led_format {
 	SINOWEALTH_LED_TYPE_NONE,
 	SINOWEALTH_LED_TYPE_RBG,
diff --git a/src/libratbag-data.c b/src/libratbag-data.c
index 55555910..7a302eba 100644
--- a/src/libratbag-data.c
+++ b/src/libratbag-data.c
@@ -243,11 +243,21 @@ init_data_sinowealth(struct ratbag *ratbag,
 
 	for (size_t i = 0; i < group_count; ++i) {
 		const char *device_group = groups[i];
-		if (startswith(device_group, devices_group) == NULL)
+		const char* fw_version = startswith(device_group, devices_group);
+		if (fw_version == NULL)
 			continue;
+		rc = (int)strlen(fw_version);
+		if (rc != SINOWEALTH_FW_VERSION_LEN) {
+			log_error(ratbag,
+				  "Group '%s': incorrect firmware version string length `%d` (must be `%d`)\n",
+				  device_group, rc, SINOWEALTH_FW_VERSION_LEN);
+			continue;
+		}
 
 		struct sinowealth_device_data *device = zalloc(sizeof(struct sinowealth_device_data));
 
+		device->fw_version = strdup_safe(fw_version);
+
 		rc = g_key_file_get_integer(keyfile, device_group, "Buttons", &error);
 		if (rc != 0 && !error) {
 			device->button_count = rc;
@@ -259,9 +269,6 @@ init_data_sinowealth(struct ratbag *ratbag,
 		device->device_name = g_key_file_get_string(keyfile, device_group, "DeviceName", &error);
 		g_clear_error(&error);
 
-		device->fw_version = g_key_file_get_string(keyfile, device_group, "FwVersion", &error);
-		g_clear_error(&error);
-
 		_cleanup_free_ char *led_type_str = g_key_file_get_string(keyfile, device_group, "LedType", &error);
 		if (led_type_str) {
 			if (streq(led_type_str, "RGB")) {
diff --git a/test/data-parse-test.py b/test/data-parse-test.py
index b4b2ec04..1c081801 100755
--- a/test/data-parse-test.py
+++ b/test/data-parse-test.py
@@ -275,10 +275,10 @@ def validate_data_file_name(path: str):
         )
 
 
+SINOWEALTH_FW_VERSION_LEN = 4
 SINOWEALTH_DEVICE_SECTION_PREFIX = "Driver/sinowealth/devices/"
 SINOWEALTH_REQUIRED_KEYS = (
     "DeviceName",
-    "FwVersion",
     "LedType",
 )
 SINOWEALTH_PERMITTED_KEYS = (
@@ -310,6 +310,8 @@ def parse_data_file(path: str):
         for device_section_name in data.sections():
             if not device_section_name.startswith(SINOWEALTH_DEVICE_SECTION_PREFIX):
                 continue
+            fw_version = device_section_name[len(SINOWEALTH_DEVICE_SECTION_PREFIX) :]
+            assert len(fw_version) == SINOWEALTH_FW_VERSION_LEN
 
             device_section = data[device_section_name]
             for key in SINOWEALTH_REQUIRED_KEYS: