diff --git a/lexer/lexer_test.go b/lexer/lexer_test.go
index 26ffbc9..492ebfd 100644
--- a/lexer/lexer_test.go
+++ b/lexer/lexer_test.go
@@ -2,6 +2,7 @@ package lexer
 
 import "testing"
 import "github.com/sashakoshka/arf/file"
+import "github.com/sashakoshka/arf/types"
 
 func TestTokenizeAll (test *testing.T) {
 	file, err := file.Open("tests/lexer/all")
@@ -18,7 +19,10 @@ func TestTokenizeAll (test *testing.T) {
 
 	correct := []Token {
 		Token { kind: TokenKindSeparator },
-		Token { kind: TokenKindPermission /* TODO: value */ },
+		Token { kind: TokenKindPermission, value: types.Permission {
+			Internal: types.ModeRead,
+			External: types.ModeWrite,
+		}},
 		Token { kind: TokenKindReturnDirection },
 		Token { kind: TokenKindInt, value: -349820394 },
 		Token { kind: TokenKindUInt, value: 932748397 },
diff --git a/types/permission.go b/types/permission.go
new file mode 100644
index 0000000..ec59771
--- /dev/null
+++ b/types/permission.go
@@ -0,0 +1,14 @@
+package types
+
+type Mode int
+
+const (
+	ModeRead = iota
+	ModeWrite
+	ModeNone
+)
+
+type Permission struct {
+	Internal Mode
+	External Mode
+}