diff --git a/Makefile.am b/Makefile.am
index 0b87f6558e..9cbde8a8bb 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -121,6 +121,7 @@ tsdb_SRC := \
 	src/utils/ByteArrayPair.java \
 	src/utils/Config.java \
 	src/utils/DateTime.java \
+	src/utils/FileSystem.java \
 	src/utils/JSON.java \
 	src/utils/JSONException.java	\
 	src/utils/Pair.java	\