diff --git a/README.md b/README.md
index 7149f41..a89339c 100644
--- a/README.md
+++ b/README.md
@@ -43,3 +43,4 @@
 33 - 44 = -11
 43 - 34 = 9
 94 + 37 = 131
+21 - 54 = -35 (FALSCH)