diff --git a/src/Mod/Material/Material.py b/src/Mod/Material/Material.py
index 311ec69cfc..a6d4d654b6 100644
--- a/src/Mod/Material/Material.py
+++ b/src/Mod/Material/Material.py
@@ -49,6 +49,10 @@ Version:
 """
 
 
+# see comments in module importFCMat, there is a independent parser implementaion for reading and writing FCMat files
+# inside FreeCAD the importFCMat.py parser defs are used
+
+
 def importFCMat(fileName):
     "Read a FCMat file into a dictionary"
     try:
diff --git a/src/Mod/Material/importFCMat.py b/src/Mod/Material/importFCMat.py
index 32cc5f10e6..77c3f75624 100644
--- a/src/Mod/Material/importFCMat.py
+++ b/src/Mod/Material/importFCMat.py
@@ -83,6 +83,8 @@ def decode(name):
 # in standard ini file format a = in the value without any encapsulation or string quotes is not allowed (AFAIK)
 # https://en.wikipedia.org/wiki/INI_file
 # http://www.docuxplorer.com/WebHelp/INI_File_Format.htm
+# in the module Material.py is another implementaion of reading and writing FCMat files which uses the module ConfigParser
+# it seams these are not used inside FreeCAD
 
 # Metainformations
 # first five lines are the same in any card file