diff --git a/README.md b/README.md
index 00d2ad1..7da5c9c 100644
--- a/README.md
+++ b/README.md
@@ -111,7 +111,7 @@ Functions in the congirutation sub menu
 |`CATCHSTOP`      |`CSTP`|stop interval for stir fish catch function (ms)|
 |`PWM0`, `PWM1`   |      |PWM output pins for fan speed|
 |`PWM2`           |      |PWM output pin for LCD brightness control|
-|`I0`, `I1`       |      |interrupts for rpm measurement (2 and 3 for Leonardo and ProMicro / 0 and 1 for Uno)|
+|`I0`, `I1`       |      |interrupts for rpm measurement (0/1 for Uno/Nanp, 2/3 for Leonardo/ProMicro)|
 |`SWAPENC`        |`SWEN`|switch KY-040 encoder direxction (0/1)| 
 |`CLK`, `DT`, `SW`|      |pins for KY-040 encoder| 
 |`R0`, `R0`       |      |voltage select relais pin|