diff --git a/src/main/resources/language/translation_en.properties b/src/main/resources/language/translation_en.properties
index 2779fb8..867769e 100644
--- a/src/main/resources/language/translation_en.properties
+++ b/src/main/resources/language/translation_en.properties
@@ -95,6 +95,21 @@ root.UNEXPECTED_CHARACTER=The input contains a character which is not allowed at
 error.heading=Input is syntactically wrong!
 root.wrongCharacter=Wrong character: \u0020
 root.position=At Position: \u0020
+error.expectedToken=Expected: {0}
+tokentype.LAMBDA=λ
+tokentype.VARIABLE=Variable
+tokentype.LET=let
+tokentype.IN=in
+tokentype.TRUE=true
+tokentype.FALSE=false
+tokentype.NUMBER=Number
+tokentype.LEFT_PARENTHESIS=(
+tokentype.RIGHT_PARENTHESIS=)
+tokentype.DOT=.
+tokentype.EQUALS==
+tokentype.ARROW=->
+tokentype.EOF=End of input
+root.or=or
 root.slideExp=Typicalc is an application for the visualisation of type inference. The slideshow below the text \
 demonstrates the most important features of the website. In each slide the relevant operating element is surrounded \
 by a red border. The buttons at the bottom of the website can be used to navigate through the slides.