diff --git a/src/indexer/Makefile.am.alt b/src/indexer/Makefile.am.alt
index 24c3daf..c1c9877 100644
--- a/src/indexer/Makefile.am.alt
+++ b/src/indexer/Makefile.am.alt
@@ -15,7 +15,7 @@ include_HEADERS= \
 	../common/kiwix/xapian/htmlparse.h \
 	../common/unaccent.h \
 	../common/kiwix/indexer.h \
-	../common/kiwix/reader.h \	
+	../common/kiwix/reader.h \
 	../common/kiwix/xapianIndexer.h \
 	../common/kiwix/cluceneIndexer.h 
 kiwix_index_CXXFLAGS=$(XAPIAN_CFLAGS) $(CLUCENE_CFLAGS) $(ICU_CFLAGS) $(LZMA_CFLAGS) -I../common/