diff --git a/README.md b/README.md
index d846e2bcb..5d4c507fc 100644
--- a/README.md
+++ b/README.md
@@ -158,7 +158,7 @@ To build the daemon and `ctr` simple test client, the following build system dep
 * Protoc 3.x compiler and headers (download at the [Google protobuf releases page](https://github.com/google/protobuf/releases))
 * Btrfs headers and libraries for your distribution. Note that building the btrfs driver can be disabled via build tag removing this dependency.
 
-For proper results, install the `protoc` release into `/usr/local` on your build system. For example, the following commands will download and install the 3.1.0 release for a 64-bit Linux host:
+For proper results, install the `protoc` release into `/usr/local` on your build system. For example, the following commands will download and install the 3.5.0 release for a 64-bit Linux host:
 
 ```
 $ wget -c https://github.com/google/protobuf/releases/download/v3.5.0/protoc-3.5.0-linux-x86_64.zip
diff --git a/api/services/leases/v1/leases.pb.go b/api/services/leases/v1/leases.pb.go
index 5e446ce2b..a922fdeb5 100644
--- a/api/services/leases/v1/leases.pb.go
+++ b/api/services/leases/v1/leases.pb.go
@@ -133,7 +133,7 @@ type LeasesClient interface {
 	// during the lease eligible for garbage collection if not referenced
 	// or retained by other resources during the lease.
 	Delete(ctx context.Context, in *DeleteRequest, opts ...grpc.CallOption) (*google_protobuf1.Empty, error)
-	// ListTransactions lists all active leases, returning the full list of
+	// List lists all active leases, returning the full list of
 	// leases and optionally including the referenced resources.
 	List(ctx context.Context, in *ListRequest, opts ...grpc.CallOption) (*ListResponse, error)
 }
@@ -183,7 +183,7 @@ type LeasesServer interface {
 	// during the lease eligible for garbage collection if not referenced
 	// or retained by other resources during the lease.
 	Delete(context.Context, *DeleteRequest) (*google_protobuf1.Empty, error)
-	// ListTransactions lists all active leases, returning the full list of
+	// List lists all active leases, returning the full list of
 	// leases and optionally including the referenced resources.
 	List(context.Context, *ListRequest) (*ListResponse, error)
 }
diff --git a/api/services/leases/v1/leases.proto b/api/services/leases/v1/leases.proto
index 5563b621d..1002a2d6e 100644
--- a/api/services/leases/v1/leases.proto
+++ b/api/services/leases/v1/leases.proto
@@ -19,7 +19,7 @@ service Leases {
 	// or retained by other resources during the lease.
 	rpc Delete(DeleteRequest) returns (google.protobuf.Empty);
 
-	// ListTransactions lists all active leases, returning the full list of
+	// List lists all active leases, returning the full list of
 	// leases and optionally including the referenced resources.
 	rpc List(ListRequest) returns (ListResponse);
 }
diff --git a/gc/gc.go b/gc/gc.go
index 70838a762..66898c5de 100644
--- a/gc/gc.go
+++ b/gc/gc.go
@@ -36,7 +36,7 @@ func Tricolor(roots []Node, refs func(ref Node) ([]Node, error)) (map[Node]struc
 	var (
 		grays     []Node                // maintain a gray "stack"
 		seen      = map[Node]struct{}{} // or not "white", basically "seen"
-		reachable = map[Node]struct{}{} // or "block", in tri-color parlance
+		reachable = map[Node]struct{}{} // or "black", in tri-color parlance
 	)
 
 	grays = append(grays, roots...)