diff --git a/README.md b/README.md
index 609a8ee..49916a0 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,6 @@
 33 * 60 = 1980
 57 / 3 = 19
 33 * 62 = 2046
-81 - 81 = 0
 99 / 2 = 49
 66 + 12 = 83 (FALSCH)
 99 * 46 = 4554