diff --git a/right/src/config_parser/config_globals.c b/right/src/config_parser/config_globals.c
index 4207681..aa05e3a 100644
--- a/right/src/config_parser/config_globals.c
+++ b/right/src/config_parser/config_globals.c
@@ -6,6 +6,7 @@ static uint8_t hardwareConfig[HARDWARE_CONFIG_SIZE];
 static uint8_t ATTR_DATA2 stagingUserConfig[USER_CONFIG_SIZE];
 static uint8_t validatedUserConfig[USER_CONFIG_SIZE];
 
+uint16_t ValidatedUserConfigLength;
 config_buffer_t HardwareConfigBuffer = { hardwareConfig };
 config_buffer_t StagingUserConfigBuffer = { stagingUserConfig };
 config_buffer_t ValidatedUserConfigBuffer = { validatedUserConfig };
diff --git a/right/src/config_parser/config_globals.h b/right/src/config_parser/config_globals.h
index 3cc5dde..bac7455 100644
--- a/right/src/config_parser/config_globals.h
+++ b/right/src/config_parser/config_globals.h
@@ -17,6 +17,7 @@
 // Variables:
 
     extern bool ParserRunDry;
+    extern uint16_t ValidatedUserConfigLength;
     extern config_buffer_t HardwareConfigBuffer;
     extern config_buffer_t StagingUserConfigBuffer;
     extern config_buffer_t ValidatedUserConfigBuffer;
diff --git a/right/src/config_parser/parse_config.c b/right/src/config_parser/parse_config.c
index 95bcd29..2e1e036 100644
--- a/right/src/config_parser/parse_config.c
+++ b/right/src/config_parser/parse_config.c
@@ -51,7 +51,6 @@ parser_error_t ParseConfig(config_buffer_t *buffer)
     const char *deviceName = ReadString(buffer, &len);
     uint16_t doubleTapSwitchLayerTimeout = ReadUInt16(buffer);
 
-    (void)userConfigLength;
     (void)dataModelMajorVersion;
     (void)dataModelMinorVersion;
     (void)dataModelPatchVersion;
@@ -141,6 +140,8 @@ parser_error_t ParseConfig(config_buffer_t *buffer)
 
         // Update LED brightnesses and reinitialize LED drivers
 
+        ValidatedUserConfigLength = userConfigLength;
+
         IconsAndLayerTextsBrightness = iconsAndLayerTextsBrightness;
         AlphanumericSegmentsBrightness = alphanumericSegmentsBrightness;
         KeyBacklightBrightness = keyBacklightBrightness;
diff --git a/right/src/eeprom.c b/right/src/eeprom.c
index 5dd0893..45c5daf 100644
--- a/right/src/eeprom.c
+++ b/right/src/eeprom.c
@@ -94,14 +94,14 @@ void EEPROM_Init(void)
     I2C_MasterTransferCreateHandle(I2C_EEPROM_BUS_BASEADDR, &i2cHandle, i2cCallback, NULL);
 }
 
-status_t EEPROM_LaunchTransfer(eeprom_operation_t operation, config_buffer_id_t config_buffer_id, void (*successCallback))
+status_t EEPROM_LaunchTransfer(eeprom_operation_t operation, config_buffer_id_t configBufferId, void (*successCallback))
 {
     if (IsEepromBusy) {
         return kStatus_I2C_Busy;
     }
 
     CurrentEepromOperation = operation;
-    CurrentConfigBufferId = config_buffer_id;
+    CurrentConfigBufferId = configBufferId;
     SuccessCallback = successCallback;
 
     bool isHardwareConfig = CurrentConfigBufferId == ConfigBufferId_HardwareConfig;
@@ -117,7 +117,8 @@ status_t EEPROM_LaunchTransfer(eeprom_operation_t operation, config_buffer_id_t
         case EepromOperation_Write:
             sourceBuffer = ConfigBufferIdToConfigBuffer(CurrentConfigBufferId)->buffer;
             sourceOffset = 0;
-            sourceLength = isHardwareConfig ? HARDWARE_CONFIG_SIZE : USER_CONFIG_SIZE;
+            uint16_t userConfigSize = ValidatedUserConfigLength && configBufferId == ConfigBufferId_ValidatedUserConfig ? ValidatedUserConfigLength : USER_CONFIG_SIZE;
+            sourceLength = isHardwareConfig ? HARDWARE_CONFIG_SIZE : userConfigSize;
             LastEepromTransferStatus = writePage();
             break;
     }