diff --git a/ScanFunctions_plot.py b/ScanFunctions_plot.py
index c98e0b8a3f388a087c1b986adf9cd8ea1c6093fc..2f842b4ce4e7c9008bec9a7d50ba197ec9eb0637 100755
--- a/ScanFunctions_plot.py
+++ b/ScanFunctions_plot.py
@@ -2121,7 +2121,7 @@ def read_id_files(first,last,filepath=None,prefix=None,q=True):
 
 def id2num(ID,grt,mode,first=0,last=inf,ignore=[],filepath=None,prefix=None,q=True):   # Not efficient - requires to read all 600 files everytime
     """
-    Return ScanNum corresponding to a given ID_SP from log file myfile.txt
+    Return ScanNum corresponding to a given ID_SP from ExtraPVs (using mdaFile)
     """
     if filepath == None:
         filepath=MDA_CurrentDirectory()
@@ -2145,7 +2145,7 @@ def id2num(ID,grt,mode,first=0,last=inf,ignore=[],filepath=None,prefix=None,q=Tr
 
 def num2id(ScanNum,grt,mode,first=0,last=inf,ignore=[],filepath=None,prefix=None,q=True):  # Not efficient - requires to read all 600 files everytime
     """
-    Return ID SP corresponding to a given ScanNum from log file myfile.txt
+    Return ID SP corresponding to a given ScanNum from ExtraPVs (using mdaFile)
     """
     if filepath == None:
         filepath=MDA_CurrentDirectory()