diff --git a/tess-cfg/no_ligature b/tess-cfg/no_ligature
index 246507e1..cb10211a 100644
--- a/tess-cfg/no_ligature
+++ b/tess-cfg/no_ligature
@@ -1 +1,9 @@
-tessedit_char_blacklist fifl
\ No newline at end of file
+##############################################################################
+# tesseract config file provided for OCRmyPDF
+#
+# prevents tesseract to detect ligatures, as ligatures are not displayed correctly in the final PDF file
+# but are replaced by a black square
+#
+# Copyright (c) 2013-14: fritz-hh from Github (https://github.com/fritz-hh)
+##############################################################################
+tessedit_char_blacklist fifl