diff --git a/assets/languages/en/Main.xml b/assets/languages/en/Main.xml
index 14b82b5d..dec03273 100644
--- a/assets/languages/en/Main.xml
+++ b/assets/languages/en/Main.xml
@@ -101,5 +101,7 @@
 		<str id="diff.easy">Easy</str>
 		<str id="diff.normal">Normal</str>
 		<str id="diff.hard">Hard</str>
+		<str id="diff.erect">Erect</str>
+		<str id="diff.nightmare">Nightmare</str>
 	</group>
 </language>
\ No newline at end of file