diff --git a/8.1_UnitTesting.md b/8.1_UnitTesting.md
index 7c7da31..85fec12 100644
--- a/8.1_UnitTesting.md
+++ b/8.1_UnitTesting.md
@@ -382,7 +382,7 @@ class PenTest {
         p.capOff();
         assertEquals("Drawing red", p.draw());
         p.changeColor(Pen.Color.GREEN);
-        assertEquals("Drawing red", p.draw());
+        assertEquals("Drawing green", p.draw());
 
         p.capOn();
         p.changeColor(Pen.Color.GREEN);