diff --git a/src/main.cpp b/src/main.cpp
index af1a7b6..930d9bf 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -574,7 +574,7 @@ void setup()
   adcStart(_VBAT);
 
   // initialize e-paper display
-  SPI.begin(18, 19, 23, TFT_CS);
+  SPI.begin(18, 19, 23, TFT_CS); // MISO is not connected to TFT_MISO!
   display.init();
 
   #define BME_SDA 21