diff --git a/encode_value.go b/encode_value.go
index 681dc691..68c936d5 100644
--- a/encode_value.go
+++ b/encode_value.go
@@ -49,6 +49,10 @@ func getEncoder(typ reflect.Type) encoderFunc {
 }
 
 func _getEncoder(typ reflect.Type) encoderFunc {
+	if typ == reflectValueType {
+		return encodeUnsupportedValue
+	}
+
 	kind := typ.Kind()
 
 	if kind == reflect.Ptr {
diff --git a/ext_test.go b/ext_test.go
index 7af6d01d..ae4bc53f 100644
--- a/ext_test.go
+++ b/ext_test.go
@@ -3,12 +3,13 @@ package msgpack_test
 import (
 	"bytes"
 	"encoding/hex"
+	"reflect"
 	"testing"
 	"time"
 
-	"github.com/stretchr/testify/require"
 	"github.com/Basekick-Labs/msgpack/v6"
 	"github.com/Basekick-Labs/msgpack/v6/msgpcode"
+	"github.com/stretchr/testify/require"
 )
 
 func init() {
@@ -171,3 +172,8 @@ func TestDecodeCustomPayload(t *testing.T) {
 		t.Fatalf("got %q, wanted %q", payload, wanted)
 	}
 }
+
+func TestMarshalReflectValueInInterfaceMap(t *testing.T) {
+	_, err := msgpack.Marshal(map[string]interface{}{"value": reflect.ValueOf("text")})
+	require.EqualError(t, err, "msgpack: Encode(unsupported reflect.Value)")
+}
diff --git a/types.go b/types.go
index 1a397be0..c8800f55 100644
--- a/types.go
+++ b/types.go
@@ -10,7 +10,10 @@ import (
 	"github.com/vmihailenco/tagparser/v2"
 )
 
-var errorType = reflect.TypeOf((*error)(nil)).Elem()
+var (
+	errorType        = reflect.TypeOf((*error)(nil)).Elem()
+	reflectValueType = reflect.TypeOf(reflect.Value{})
+)
 
 var (
 	customEncoderType = reflect.TypeOf((*CustomEncoder)(nil)).Elem()