diff --git a/common/zlib/Makefile.am b/common/zlib/Makefile.am
index 10b7ffc..7fc1044 100644
--- a/common/zlib/Makefile.am
+++ b/common/zlib/Makefile.am
@@ -5,4 +5,4 @@
 
 libz_la_SOURCES = $(HDRS) adler32.c compress.c crc32.c deflate.c gzio.c \
 	infblock.c infcodes.c inffast.c inflate.c inftrees.c infutil.c \
-	trees.c uncompr.c
+	trees.c uncompr.c zutil.c