diff --git a/ztl-mode.el b/ztl-mode.el
index 3108bdc..3a5e386 100644
--- a/ztl-mode.el
+++ b/ztl-mode.el
@@ -10,8 +10,8 @@
   "Keywords in Ztl.")
 
 (defvar ztl-types
-  '("char" "str" "integer" "int" "real"
-    "logical" "bool" "error" "err"
+  '("byte" "str" "int" "real"
+    "logical" "bool" "err"
     "i8" "i16" "i32" "i64" "i128"
     "f8" "f16" "f32" "f64" "f128")
   "Types in Ztl.")
@@ -31,7 +31,7 @@
    ;; Structs (PascalCase)
    '("\\b[A-Z][A-Za-z0-9_]*\\b" . font-lock-type-face)
    ;; Numbers
-   '("\\b\\([0-9]+\\(?:\\.[0-9]*\\)?\\)\\b" . font-lock-constant-face)
+   '("\\b\\([0-9]+\\(?:\\.[0-9]*\\)?\\)\\b" . font-lock-number-face)
    ;; Function calls
    '("\\b\\([a-zA-Z_][a-zA-Z0-9_]*\\)\\s-*(" (1 font-lock-function-name-face))
    )