diff --git a/src/lexer.js b/src/lexer.js
index 934db89..1fc6e8a 100644
--- a/src/lexer.js
+++ b/src/lexer.js
@@ -88,7 +88,7 @@ class Juicescript_lexer {
 				
 			case "=":
 				if		(this.match("="))		this.token_add({type: Juicescript.token_type.EQUAL_EQUAL});
-				else							this.token_add({type: Juicescript.token_type.EQUAL});
+				else							this.error("unexpected character '" + this.char + "'");
 				break;
 				
 			case "<":
diff --git a/src/main.js b/src/main.js
index 3cf26e9..12e5e1a 100644
--- a/src/main.js
+++ b/src/main.js
@@ -13,7 +13,7 @@ class Juicescript {
 		"NULL",
 		
 		// operators
-		"EQUAL", "NOT",
+		"NOT",
 		"EQUAL_EQUAL", "NOT_EQUAL",
 		"GREATER", "GREATER_EQUAL",
 		"LESS", "LESS_EQUAL",