diff --git a/examples/Modules/FACES/I2C_Keyboard/I2C_Keyboard.ino b/examples/Modules/FACES/I2C_Keyboard/I2C_Keyboard.ino
index 4816f847..71dd717b 100644
--- a/examples/Modules/FACES/I2C_Keyboard/I2C_Keyboard.ino
+++ b/examples/Modules/FACES/I2C_Keyboard/I2C_Keyboard.ino
@@ -19,7 +19,7 @@ void loop()
     while (Wire.available()) { 
       uint8_t key_val = Wire.read();                  // receive a byte as character
       if(key_val != 0) {
-        if(key_val > 20 && key_val < 0x7F) { // ASCII String
+        if(key_val > 0x20 && key_val < 0x7F) { // ASCII String
           Serial.print((char)key_val);
           M5.Lcd.print((char)key_val);
         } else {
@@ -29,4 +29,4 @@ void loop()
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/examples/Modules/FACES/I2C_Keyboard_Interrupt/I2C_Keyboard_Interrupt.ino b/examples/Modules/FACES/I2C_Keyboard_Interrupt/I2C_Keyboard_Interrupt.ino
index a0e1ce0f..709ed0b0 100644
--- a/examples/Modules/FACES/I2C_Keyboard_Interrupt/I2C_Keyboard_Interrupt.ino
+++ b/examples/Modules/FACES/I2C_Keyboard_Interrupt/I2C_Keyboard_Interrupt.ino
@@ -31,7 +31,7 @@ void loop() {
   uint8_t key_val;
   // xQueueReceive(keyboard_queue, &key_val, portMAX_DELAY) // block
   if(xQueueReceive(keyboard_queue, &key_val, 0)) { // Non-blocking
-      if(key_val > 20 && key_val < 0x7F) { // ASCII String
+      if(key_val > 0x20 && key_val < 0x7F) { // ASCII String
         Serial.print((char)key_val);
         M5.Lcd.print((char)key_val);
       } else {
@@ -39,4 +39,4 @@ void loop() {
         M5.Lcd.printf("0x%02X ",key_val);
       }
   }
-}
\ No newline at end of file
+}