diff --git a/README.md b/README.md
index fe0580d..6a7ce08 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,7 @@ orange.Println("orange text")
 ```
 PASS: TestFprint
 PASS: TestPrint
+PASS: TestPrintf
 PASS: TestPrintln
 PASS: TestRGB
 PASS: TestLCH