diff --git a/Tutorial:Handle-user-inputs.md b/Tutorial:Handle-user-inputs.md
index da53e78..45393ee 100644
--- a/Tutorial:Handle-user-inputs.md
+++ b/Tutorial:Handle-user-inputs.md
@@ -11,9 +11,7 @@ import (
 )
 
 func update(screen *ebiten.Image) error {
-    if err := ebitenutil.DebugPrint(screen, "Our first game in Ebiten!"); err != nil {
-        return err
-    }
+    ebitenutil.DebugPrint(screen, "Our first game in Ebiten!")
     return nil
 }
 
@@ -126,9 +124,7 @@ func update(screen *ebiten.Image) error {
     x, y := ebiten.CursorPosition()
     
     // Display the information with "X: xx, Y: xx" format
-    if err := ebitenutil.DebugPrint(screen, fmt.Sprintf("X: %d, Y: %d", x, y)); err != nil {
-        return err
-    }
+    ebitenutil.DebugPrint(screen, fmt.Sprintf("X: %d, Y: %d", x, y))
 
     return nil
 }
@@ -171,27 +167,19 @@ And then change your `update()` function to the following code:
 func update(screen *ebiten.Image) error {
     // When the gamepad "up button" is pressed ...
     if ebiten.IsGamepadButtonPressed(0, ebiten.GamepadButton12) {
-        if err := ebitenutil.DebugPrint(screen, "You're pressing the 'UP' gamepad button."); err != nil {
-            return err
-        }
+        ebitenutil.DebugPrint(screen, "You're pressing the 'UP' gamepad button.")
     }
     // When the gamepad "down button" is pressed ...
     if ebiten.IsGamepadButtonPressed(0, ebiten.GamepadButton13) {
-        if err := ebitenutil.DebugPrint(screen, "\nYou're pressing the 'DOWN' gamepad button."); err != nil {
-            return err
-        }
+        ebitenutil.DebugPrint(screen, "\nYou're pressing the 'DOWN' gamepad button.")
     }
     // When the gamepad "left button" is pressed ...
     if ebiten.IsGamepadButtonPressed(0, ebiten.GamepadButton14) {
-        if err := ebitenutil.DebugPrint(screen, "\n\nYou're pressing the 'LEFT' gamepad button."); err != nil {
-            return err
-        }
+        ebitenutil.DebugPrint(screen, "\n\nYou're pressing the 'LEFT' gamepad button.")
     }
     // When the gamepad "right button" is pressed ...
     if ebiten.IsGamepadButtonPressed(0, ebiten.GamepadButton15) {
-        if err := ebitenutil.DebugPrint(screen, "\n\n\nYou're pressing the 'RIGHT' gamepad button."); err != nil {
-            return err
-        }
+        ebitenutil.DebugPrint(screen, "\n\n\nYou're pressing the 'RIGHT' gamepad button.")
     }
 
     return nil
@@ -222,16 +210,12 @@ func update(screen *ebiten.Image) error {
         ebiten.GamepadAxis(0, 2), // 2：The horizontal value of the right axis
         ebiten.GamepadAxis(0, 3)} // 3：The vertical value of the right axis
 
-    if err := ebitenutil.DebugPrint(screen, fmt.Sprintf("0: %0.6f, 1: %0.6f", 
+    ebitenutil.DebugPrint(screen, fmt.Sprintf("0: %0.6f, 1: %0.6f", 
          axes[0], 
-         axes[1])); err != nil {
-        return err
-    }
-    if err := ebitenutil.DebugPrint(screen, fmt.Sprintf("\n2: %0.6f, 3: %0.6f", 
+         axes[1]))
+    ebitenutil.DebugPrint(screen, fmt.Sprintf("\n2: %0.6f, 3: %0.6f", 
          axes[2], 
-         axes[3])); err != nil {
-        return err
-    }
+         axes[3]))
 
     return nil
 }