diff --git a/cpukit/Makefile.am b/cpukit/Makefile.am
index c2d8f6701a..5be38566bb 100644
--- a/cpukit/Makefile.am
+++ b/cpukit/Makefile.am
@@ -14,6 +14,8 @@ SUBDIRS += libnetworking librpc
 SUBDIRS += libmisc
 SUBDIRS += wrapup
 
+SUBDIRS += zlib
+
 # applications
 SUBDIRS += httpd
 SUBDIRS += ftpd
diff --git a/cpukit/configure.ac b/cpukit/configure.ac
index c0b6d975e2..a698b9f37e 100644
--- a/cpukit/configure.ac
+++ b/cpukit/configure.ac
@@ -298,6 +298,7 @@ libcsupport/Makefile
 libnetworking/Makefile
 librpc/Makefile
 libmisc/Makefile
+zlib/Makefile
 httpd/Makefile
 ftpd/Makefile
 telnetd/Makefile