diff --git a/drivers/gdisp/SSD1306/readme.txt b/drivers/gdisp/SSD1306/readme.txt
index 659bb9e0..0ba4be0b 100644
--- a/drivers/gdisp/SSD1306/readme.txt
+++ b/drivers/gdisp/SSD1306/readme.txt
@@ -1,6 +1,6 @@
 Description:
 
-Driver for OLED with 4-wire serial interface and I²C/SPI interface
+Driver for OLED with 4-wire serial interface and I2C/SPI interface
 
 Know restictions:
 - Driver works only with SSD1306 hooked up over I2C or SPI (include corresponding header)