diff --git a/Lib/fontTools/ttx.py b/Lib/fontTools/ttx.py
index fc33f7e8d..002215ce5 100644
--- a/Lib/fontTools/ttx.py
+++ b/Lib/fontTools/ttx.py
@@ -4,7 +4,7 @@ usage: ttx [options] inputfile1 [... inputfileN]
     TTX -- From OpenType To XML And Back
 
     If an input file is a TrueType or OpenType font file, it will be
-       decompiled to an TTX file (an XML-based text format).
+       decompiled to a TTX file (an XML-based text format).
     If an input file is a TTX file, it will be compiled to whatever 
        format the data is in, a TrueType or OpenType/CFF font file.