1 files changed, 1 insertions, 1 deletions
diff --git a/1-lexer.md b/1-lexer.md
index 809f197..8f91d71 100644
--- a/1-lexer.md
+++ b/1-lexer.md
@@ -58,7 +58,7 @@ Each dictionary should have the following properties:
 
   - "Operator" : `(`, `[`, `+`
 
-  - "Constant" : `42`, `1.0`, ...
+  - "Constant" : `42`, `1.0`, `'x'`, `' '`...
 
   - "StringLiteral" : `"Is it too late now to say sorry?"`, `"Cause I'm missing more than just"`, ...