diff --git a/avr/common/eeprom-r.asm b/avr/common/eeprom-r.asm
index c6f0036..90861c6 100644
--- a/avr/common/eeprom-r.asm
+++ b/avr/common/eeprom-r.asm
@@ -80,6 +80,7 @@ Eeprom_CheckAddr:
 ; @param X    EEPROM Address to read from
 ; @param Y    address in SDRAM to write to
 ; @param R17  number of bytes to copy
+; @return CFLAG set if address okay, cleared if out of range
 ; @clobbers r16, r17, X, Y
 
 Eeprom_ReadBytes: