diff --git a/acl/types.proto b/acl/types.proto
index ca57598..e531e5f 100644
--- a/acl/types.proto
+++ b/acl/types.proto
@@ -188,7 +188,7 @@ message BearerToken {
     // originator's `OwnerID`. If empty, any token bearer will be accepted.
     neo.fs.v2.refs.OwnerID owner_id = 2 [json_name="ownerID"];
 
-    // Lifetime parameters of the token. Filed names taken from
+    // Lifetime parameters of the token. Field names taken from
     // [rfc7519](https://tools.ietf.org/html/rfc7519).
     message TokenLifetime {
       // Expiration Epoch
diff --git a/object/types.proto b/object/types.proto
index 3fea559..f8119ca 100644
--- a/object/types.proto
+++ b/object/types.proto
@@ -135,7 +135,7 @@ message Header {
     repeated neo.fs.v2.refs.ObjectID children = 5 [json_name = "children"];
 
     // 16 byte UUID used to identify the split object hierarchy parts. Must be
-    // unique inside container. All objects participaiting in the split must
+    // unique inside container. All objects participating in the split must
     // have the same `split_id` value.
     bytes split_id = 6 [json_name = "splitID"];
 
diff --git a/session/types.proto b/session/types.proto
index 3def1bf..afc5ff3 100644
--- a/session/types.proto
+++ b/session/types.proto
@@ -53,7 +53,7 @@ message SessionToken {
     // Identifier of the session initiator
     neo.fs.v2.refs.OwnerID owner_id = 2 [json_name = "ownerID"];
 
-    // Lifetime parameters of the token. Filed names taken from rfc7519.
+    // Lifetime parameters of the token. Field names taken from rfc7519.
     message TokenLifetime {
       // Expiration Epoch
       uint64 exp = 1 [json_name = "exp"];