diff --git a/textproc/clucene/clucene.conf b/textproc/clucene/clucene.conf
index e46d0ffc5..c55acc4a0 100644
--- a/textproc/clucene/clucene.conf
+++ b/textproc/clucene/clucene.conf
@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../clucene/clucene.conf
-# Copyright (C) 2013 The OpenSDE Project
+# Copyright (C) 2013 - 2014 The OpenSDE Project
 #
 # More information can be found in the files COPYING and README.
 #
@@ -24,3 +24,4 @@ var_append cmakeopt ' ' "-DBUILD_CONTRIBS_LIB:BOOL=ON"
 var_append cmakeopt ' ' "-DLIB_DESTINATION:PATH=$root/$libdir"
 var_append cmakeopt ' ' "-DLUCENE_SYS_INCLUDES:PATH=$root/$libdir"
 var_append cmakeopt ' ' "-DDISABLE_MULTITHREADING=OFF"
+var_append cmakeopt ' ' "-DZLIB_INCLUDE_DIR=$( pkgprefix -r includedir zlib)"