diff --git a/lamb/__main__.py b/lamb/__main__.py
index df3e566..d0c58da 100755
--- a/lamb/__main__.py
+++ b/lamb/__main__.py
@@ -45,9 +45,9 @@ r.run_lines([
 	"T = λab.a",
 	"F = λab.b",
 	"NOT = λa.(a F T)",
-	"AND = λab.(a F b)",
+	"AND = λab.(a b F)",
 	"OR = λab.(a T b)",
-	"XOR = λab.(a (NOT a b) b)",
+	"XOR = λab.(a (NOT b) b)",
 	"M = λx.(x x)",
 	"W = M M",
 	"Y = λf.( (λx.(f (x x))) (λx.(f (x x))) )",