diff --git a/test/fmcadc100m14b4cha/python/test23.py b/test/fmcadc100m14b4cha/python/test23.py
index c2604b1664b2dd05ad6d9ab8fc8f426ee029347d..e6fc3c642573fa589421aa8519376dd3eb44c400 100755
--- a/test/fmcadc100m14b4cha/python/test23.py
+++ b/test/fmcadc100m14b4cha/python/test23.py
@@ -35,6 +35,7 @@ test23: Write IPMI information and calibration data to FMC EEPROM.
         Serial number and calibration data are taken from text files.
 
 Note: Requires test00.py to run first to load the firmware!
+      Requires test19.py to run before to get calibration data.
 """
 
 def main (default_directory='.'):