diff --git a/samples/calc-02/index.js b/samples/calc-02/index.js
index 8001346..88ba986 100644
--- a/samples/calc-02/index.js
+++ b/samples/calc-02/index.js
@@ -55,11 +55,11 @@ const keypadKeys = [
 const functionKeys = [
 	{ label: 'x²', action: 'sqr', className: 'key-default', title: 's' },
 	{ label: '√x', action: 'sqrt', className: 'key-default', title: 'r' },
-	{ label: '1/x', action: 'recip', className: 'key-default', title: 'v' },
+	{ label: '1/x', action: 'recip', className: 'key-default', title: 'x' },
 	{ label: '%', action: 'mod', className: 'key-default' },
 	{ label: 'yˣ', action: 'pow', className: 'key-default', title: 'S' },
 	{ label: 'y√x', action: 'root', className: 'key-default', title: 'R' },
-	{ label: '10ˣ', action: 'pow10', className: 'key-default', title: 'u' },
+	{ label: '10ˣ', action: 'pow10', className: 'key-default', title: 'd' },
 	{ label: '', spacer: true },
 	{ label: 'log', action: 'log', className: 'key-default', title: 'l / L' },
 	{ label: 'ln', action: 'ln', className: 'key-default', title: 'n / N' },