diff --git a/go/lab/servo.pb.go b/go/lab/servo.pb.go
index c27db71..faf2d58 100644
--- a/go/lab/servo.pb.go
+++ b/go/lab/servo.pb.go
@@ -84,7 +84,7 @@
 	// Servo firmware from Stable channel.
 	ServoFwChannel_SERVO_FW_STABLE ServoFwChannel = 0
 	// The previous Servo firmware from Stable channel.
-	ServoFwChannel_SERVO_FW_PREVIOUS ServoFwChannel = 1
+	ServoFwChannel_SERVO_FW_PREV ServoFwChannel = 1
 	// Servo firmware from Dev channel.
 	ServoFwChannel_SERVO_FW_DEV ServoFwChannel = 2
 	// Servo firmware from Alpha channel.
@@ -95,15 +95,15 @@
 var (
 	ServoFwChannel_name = map[int32]string{
 		0: "SERVO_FW_STABLE",
-		1: "SERVO_FW_PREVIOUS",
+		1: "SERVO_FW_PREV",
 		2: "SERVO_FW_DEV",
 		3: "SERVO_FW_ALPHA",
 	}
 	ServoFwChannel_value = map[string]int32{
-		"SERVO_FW_STABLE":   0,
-		"SERVO_FW_PREVIOUS": 1,
-		"SERVO_FW_DEV":      2,
-		"SERVO_FW_ALPHA":    3,
+		"SERVO_FW_STABLE": 0,
+		"SERVO_FW_PREV":   1,
+		"SERVO_FW_DEV":    2,
+		"SERVO_FW_ALPHA":  3,
 	}
 )
 
@@ -419,17 +419,16 @@
 	0x52, 0x10, 0x00, 0x12, 0x17, 0x0a, 0x13, 0x53, 0x45, 0x52, 0x56, 0x4f, 0x5f, 0x53, 0x45, 0x54,
 	0x55, 0x50, 0x5f, 0x44, 0x55, 0x41, 0x4c, 0x5f, 0x56, 0x34, 0x10, 0x01, 0x12, 0x17, 0x0a, 0x13,
 	0x53, 0x45, 0x52, 0x56, 0x4f, 0x5f, 0x53, 0x45, 0x54, 0x55, 0x50, 0x5f, 0x49, 0x4e, 0x56, 0x41,
-	0x4c, 0x49, 0x44, 0x10, 0x02, 0x2a, 0x62, 0x0a, 0x0e, 0x53, 0x65, 0x72, 0x76, 0x6f, 0x46, 0x77,
+	0x4c, 0x49, 0x44, 0x10, 0x02, 0x2a, 0x5e, 0x0a, 0x0e, 0x53, 0x65, 0x72, 0x76, 0x6f, 0x46, 0x77,
 	0x43, 0x68, 0x61, 0x6e, 0x6e, 0x65, 0x6c, 0x12, 0x13, 0x0a, 0x0f, 0x53, 0x45, 0x52, 0x56, 0x4f,
-	0x5f, 0x46, 0x57, 0x5f, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x45, 0x10, 0x00, 0x12, 0x15, 0x0a, 0x11,
-	0x53, 0x45, 0x52, 0x56, 0x4f, 0x5f, 0x46, 0x57, 0x5f, 0x50, 0x52, 0x45, 0x56, 0x49, 0x4f, 0x55,
-	0x53, 0x10, 0x01, 0x12, 0x10, 0x0a, 0x0c, 0x53, 0x45, 0x52, 0x56, 0x4f, 0x5f, 0x46, 0x57, 0x5f,
-	0x44, 0x45, 0x56, 0x10, 0x02, 0x12, 0x12, 0x0a, 0x0e, 0x53, 0x45, 0x52, 0x56, 0x4f, 0x5f, 0x46,
-	0x57, 0x5f, 0x41, 0x4c, 0x50, 0x48, 0x41, 0x10, 0x03, 0x42, 0x2f, 0x5a, 0x2d, 0x67, 0x6f, 0x2e,
-	0x63, 0x68, 0x72, 0x6f, 0x6d, 0x69, 0x75, 0x6d, 0x2e, 0x6f, 0x72, 0x67, 0x2f, 0x63, 0x68, 0x72,
-	0x6f, 0x6d, 0x69, 0x75, 0x6d, 0x6f, 0x73, 0x2f, 0x69, 0x6e, 0x66, 0x72, 0x61, 0x2f, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x2f, 0x6c, 0x61, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
-	0x6f, 0x33,
+	0x5f, 0x46, 0x57, 0x5f, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x45, 0x10, 0x00, 0x12, 0x11, 0x0a, 0x0d,
+	0x53, 0x45, 0x52, 0x56, 0x4f, 0x5f, 0x46, 0x57, 0x5f, 0x50, 0x52, 0x45, 0x56, 0x10, 0x01, 0x12,
+	0x10, 0x0a, 0x0c, 0x53, 0x45, 0x52, 0x56, 0x4f, 0x5f, 0x46, 0x57, 0x5f, 0x44, 0x45, 0x56, 0x10,
+	0x02, 0x12, 0x12, 0x0a, 0x0e, 0x53, 0x45, 0x52, 0x56, 0x4f, 0x5f, 0x46, 0x57, 0x5f, 0x41, 0x4c,
+	0x50, 0x48, 0x41, 0x10, 0x03, 0x42, 0x2f, 0x5a, 0x2d, 0x67, 0x6f, 0x2e, 0x63, 0x68, 0x72, 0x6f,
+	0x6d, 0x69, 0x75, 0x6d, 0x2e, 0x6f, 0x72, 0x67, 0x2f, 0x63, 0x68, 0x72, 0x6f, 0x6d, 0x69, 0x75,
+	0x6d, 0x6f, 0x73, 0x2f, 0x69, 0x6e, 0x66, 0x72, 0x61, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f,
+	0x67, 0x6f, 0x2f, 0x6c, 0x61, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/src/lab/servo.proto b/src/lab/servo.proto
index 8e70dfc..f712d43 100644
--- a/src/lab/servo.proto
+++ b/src/lab/servo.proto
@@ -39,7 +39,7 @@
   // Servo firmware from Stable channel.
   SERVO_FW_STABLE = 0;
   // The previous Servo firmware from Stable channel.
-  SERVO_FW_PREVIOUS = 1;
+  SERVO_FW_PREV = 1;
   // Servo firmware from Dev channel.
   SERVO_FW_DEV = 2;
   // Servo firmware from Alpha channel.