diff --git a/frappy/errors.py b/frappy/errors.py
index 6ca48bf9..fcd6eb15 100644
--- a/frappy/errors.py
+++ b/frappy/errors.py
@@ -232,7 +232,7 @@ class ReadFailedError(SECoPError):
 
 
 class OutOfRangeError(SECoPError):
-    """The requested parameter can not be read just now"""
+    """The value read from the hardware is out of sensor or calibration range"""
     name = 'OutOfRange'