diff --git a/src/docgen/Makefile.am b/src/docgen/Makefile.am
index 8d30303a6..642217317 100644
--- a/src/docgen/Makefile.am
+++ b/src/docgen/Makefile.am
@@ -10,8 +10,9 @@ docgen_PYTHON = \
 	LaTeXDoc.py\
 	ODFDoc.py\
 	ODSDoc.py\
-        ODSTab.py\
+	ODSTab.py\
 	SpreadSheetDoc.py\
+	TabbedDoc.py\
 	PdfDoc.py\
 	PSDrawDoc.py\
 	RTFDoc.py\