diff --git a/Platformio/platformio.ini b/Platformio/platformio.ini
index e4d3f9d..9617d7c 100644
--- a/Platformio/platformio.ini
+++ b/Platformio/platformio.ini
@@ -40,7 +40,7 @@ build_flags =
 	-D TFT_CS=5
 	-D TFT_DC=9
 	-D TFT_RST=-1
-	-D SPI_FREQUENCY=80000000
+	-D SPI_FREQUENCY=40000000 ; 40MHz default, some displays might support 80MHz
 	-D SPI_TOUCH_FREQUENCY=2500000
 	; TFT_eSPI fonts are disabled by default
 	;-D LOAD_GLCD=1