diff --git a/transport/http2_client_transport.go b/transport/http2_client_transport.go
index a5232b50..f2147509 100644
--- a/transport/http2_client_transport.go
+++ b/transport/http2_client_transport.go
@@ -117,7 +117,7 @@ func newHTTP2Client(addr string, authOpts []credentials.Credentials) (_ ClientTr
 		conn, connErr = net.Dial("tcp", addr)
 	}
 	if connErr != nil {
-		return nil, ConnectionErrorf("grpc/transport: %v", connErr)
+		return nil, ConnectionErrorf("transport: %v", connErr)
 	}
 	defer func() {
 		if err != nil {
@@ -127,14 +127,14 @@ func newHTTP2Client(addr string, authOpts []credentials.Credentials) (_ ClientTr
 	// Send connection preface to server.
 	n, err := conn.Write(clientPreface)
 	if err != nil {
-		return nil, ConnectionErrorf("grpc/transport: %v", err)
+		return nil, ConnectionErrorf("transport: %v", err)
 	}
 	if n != len(clientPreface) {
-		return nil, ConnectionErrorf("grpc/transport: preface mismatch, wrote %d bytes; want %d", n, len(clientPreface))
+		return nil, ConnectionErrorf("transport: preface mismatch, wrote %d bytes; want %d", n, len(clientPreface))
 	}
 	framer := http2.NewFramer(conn, conn)
 	if err := framer.WriteSettings(); err != nil {
-		return nil, ConnectionErrorf("grpc/transport: %v", err)
+		return nil, ConnectionErrorf("transport: %v", err)
 	}
 	var buf bytes.Buffer
 	t := &http2Client{
@@ -225,7 +225,7 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea
 		default:
 		}
 		if err != nil {
-			return nil, StreamErrorf(codes.InvalidArgument, "grpc/transport: %v", err)
+			return nil, StreamErrorf(codes.InvalidArgument, "transport: %v", err)
 		}
 		for k, v := range m {
 			t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: v})
@@ -265,7 +265,7 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea
 		}
 		if err != nil {
 			t.notifyError()
-			return nil, ConnectionErrorf("grpc/transport: %v", err)
+			return nil, ConnectionErrorf("transport: %v", err)
 		}
 	}
 	s := t.newStream(ctx, callHdr)
@@ -276,7 +276,7 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea
 	}
 	if uint32(len(t.activeStreams)) >= t.maxStreams {
 		t.mu.Unlock()
-		return nil, StreamErrorf(codes.Unavailable, "grpc/transport: failed to create new stream because the limit has been reached.")
+		return nil, StreamErrorf(codes.Unavailable, "transport: failed to create new stream because the limit has been reached.")
 	}
 	t.activeStreams[s.id] = s
 	t.mu.Unlock()
@@ -391,7 +391,7 @@ func (t *http2Client) Write(s *Stream, data []byte, opts *Options) error {
 		// invoked.
 		if err := t.framer.WriteData(s.id, endStream, p); err != nil {
 			t.notifyError()
-			return ConnectionErrorf("grpc/transport: %v", err)
+			return ConnectionErrorf("transport: %v", err)
 		}
 		t.writableChan <- 0
 		if r.Len() == 0 {
diff --git a/transport/http2_server_transport.go b/transport/http2_server_transport.go
index 39cd0a62..633e3f51 100644
--- a/transport/http2_server_transport.go
+++ b/transport/http2_server_transport.go
@@ -52,7 +52,7 @@ import (
 
 // ErrIllegalHeaderWrite indicates that setting header is illegal because of
 // the stream's state.
-var ErrIllegalHeaderWrite = errors.New("grpc/transport: the stream is done or WriteHeader was already called")
+var ErrIllegalHeaderWrite = errors.New("transport: the stream is done or WriteHeader was already called")
 
 // http2Server implements the ServerTransport interface with HTTP2.
 type http2Server struct {
@@ -387,7 +387,7 @@ func (t *http2Server) writeHeaders(s *Stream, b *bytes.Buffer, endStream bool) e
 		}
 		if err != nil {
 			t.Close()
-			return ConnectionErrorf("grpc/transport: %v", err)
+			return ConnectionErrorf("transport: %v", err)
 		}
 	}
 	return nil
@@ -478,7 +478,7 @@ func (t *http2Server) Write(s *Stream, data []byte, opts *Options) error {
 		}
 		if err := t.framer.WriteHeaders(p); err != nil {
 			t.Close()
-			return ConnectionErrorf("grpc/transport: %v", err)
+			return ConnectionErrorf("transport: %v", err)
 		}
 		t.writableChan <- 0
 	}
@@ -526,7 +526,7 @@ func (t *http2Server) Write(s *Stream, data []byte, opts *Options) error {
 		}
 		if err := t.framer.WriteData(s.id, false, p); err != nil {
 			t.Close()
-			return ConnectionErrorf("grpc/transport: %v", err)
+			return ConnectionErrorf("transport: %v", err)
 		}
 		t.writableChan <- 0
 	}
diff --git a/transport/http_util.go b/transport/http_util.go
index 40125506..30fbd076 100644
--- a/transport/http_util.go
+++ b/transport/http_util.go
@@ -137,7 +137,7 @@ func newHPACKDecoder() *hpackDecoder {
 		case "grpc-status":
 			code, err := strconv.Atoi(f.Value)
 			if err != nil {
-				d.err = StreamErrorf(codes.Internal, "grpc/transport: malformed grpc-status: %v", err)
+				d.err = StreamErrorf(codes.Internal, "transport: malformed grpc-status: %v", err)
 				return
 			}
 			d.state.statusCode = codes.Code(code)
@@ -148,7 +148,7 @@ func newHPACKDecoder() *hpackDecoder {
 			var err error
 			d.state.timeout, err = timeoutDecode(f.Value)
 			if err != nil {
-				d.err = StreamErrorf(codes.Internal, "grpc/transport: malformed time-out: %v", err)
+				d.err = StreamErrorf(codes.Internal, "transport: malformed time-out: %v", err)
 				return
 			}
 		case ":path":
@@ -174,12 +174,12 @@ func (d *hpackDecoder) decodeClientHTTP2Headers(s *Stream, frame headerFrame) (e
 	d.err = nil
 	_, err = d.h.Write(frame.HeaderBlockFragment())
 	if err != nil {
-		err = StreamErrorf(codes.Internal, "grpc/transport: HPACK header decode error: %v", err)
+		err = StreamErrorf(codes.Internal, "transport: HPACK header decode error: %v", err)
 	}
 
 	if frame.HeadersEnded() {
 		if closeErr := d.h.Close(); closeErr != nil && err == nil {
-			err = StreamErrorf(codes.Internal, "grpc/transport: HPACK decoder close error: %v", closeErr)
+			err = StreamErrorf(codes.Internal, "transport: HPACK decoder close error: %v", closeErr)
 		}
 		endHeaders = true
 	}
@@ -194,12 +194,12 @@ func (d *hpackDecoder) decodeServerHTTP2Headers(s *Stream, frame headerFrame) (e
 	d.err = nil
 	_, err = d.h.Write(frame.HeaderBlockFragment())
 	if err != nil {
-		err = StreamErrorf(codes.Internal, "grpc/transport: HPACK header decode error: %v", err)
+		err = StreamErrorf(codes.Internal, "transport: HPACK header decode error: %v", err)
 	}
 
 	if frame.HeadersEnded() {
 		if closeErr := d.h.Close(); closeErr != nil && err == nil {
-			err = StreamErrorf(codes.Internal, "grpc/transport: HPACK decoder close error: %v", closeErr)
+			err = StreamErrorf(codes.Internal, "transport: HPACK decoder close error: %v", closeErr)
 		}
 		endHeaders = true
 	}
@@ -275,12 +275,12 @@ func timeoutEncode(t time.Duration) string {
 func timeoutDecode(s string) (time.Duration, error) {
 	size := len(s)
 	if size < 2 {
-		return 0, fmt.Errorf("grpc/transport: timeout string is too short: %q", s)
+		return 0, fmt.Errorf("transport: timeout string is too short: %q", s)
 	}
 	unit := timeoutUnit(s[size-1])
 	d, ok := timeoutUnitToDuration(unit)
 	if !ok {
-		return 0, fmt.Errorf("grpc/transport: timeout unit is not recognized: %q", s)
+		return 0, fmt.Errorf("transport: timeout unit is not recognized: %q", s)
 	}
 	t, err := strconv.ParseInt(s[:size-1], 10, 64)
 	if err != nil {
diff --git a/transport/http_util_test.go b/transport/http_util_test.go
index b4b66295..b5b18bf4 100644
--- a/transport/http_util_test.go
+++ b/transport/http_util_test.go
@@ -75,9 +75,9 @@ func TestTimeoutDecode(t *testing.T) {
 		err error
 	}{
 		{"1234S", time.Second * 1234, nil},
-		{"1234x", 0, fmt.Errorf("grpc/transport: timeout unit is not recognized: %q", "1234x")},
-		{"1", 0, fmt.Errorf("grpc/transport: timeout string is too short: %q", "1")},
-		{"", 0, fmt.Errorf("grpc/transport: timeout string is too short: %q", "")},
+		{"1234x", 0, fmt.Errorf("transport: timeout unit is not recognized: %q", "1234x")},
+		{"1", 0, fmt.Errorf("transport: timeout string is too short: %q", "1")},
+		{"", 0, fmt.Errorf("transport: timeout string is too short: %q", "")},
 	} {
 		d, err := timeoutDecode(test.s)
 		if d != test.d || fmt.Sprint(err) != fmt.Sprint(test.err) {
diff --git a/transport/transport.go b/transport/transport.go
index 5598a590..2cd211e6 100644
--- a/transport/transport.go
+++ b/transport/transport.go
@@ -247,7 +247,7 @@ func (s *Stream) StatusDesc() string {
 
 // ErrIllegalTrailerSet indicates that the trailer has already been set or it
 // is too late to do so.
-var ErrIllegalTrailerSet = errors.New("grpc/transport: trailer has been set")
+var ErrIllegalTrailerSet = errors.New("transport: trailer has been set")
 
 // SetTrailer sets the trailer metadata which will be sent with the RPC status
 // by the server. This can only be called at most once. Server side only.