diff --git a/protobuf/OWSSignalServiceProtos.proto b/protobuf/OWSSignalServiceProtos.proto
index 814990829..826053594 100644
--- a/protobuf/OWSSignalServiceProtos.proto
+++ b/protobuf/OWSSignalServiceProtos.proto
@@ -133,18 +133,18 @@ message SyncMessage {
 }
 
 message AttachmentPointer {
-    enum Flags {
-        VOICE_MESSAGE = 1;
-    }
+  enum Flags {
+    VOICE_MESSAGE = 1;
+  }
 
-    optional fixed64 id = 1;
-    optional string contentType = 2;
-    optional bytes key = 3;
-    optional uint32 size = 4;
-    optional bytes thumbnail = 5;
-    optional bytes digest = 6;
-    optional string fileName = 7;
-    optional uint32 flags = 8;
+  optional fixed64 id          = 1;
+  optional string  contentType = 2;
+  optional bytes   key         = 3;
+  optional uint32  size        = 4;
+  optional bytes   thumbnail   = 5;
+  optional bytes   digest      = 6;
+  optional string  fileName    = 7;
+  optional uint32 flags = 8;
 }
 
 message GroupContext {