diff --git a/rules/czmq/default.bash b/rules/czmq/default.bash
index efcbfda..1389c11 100644
--- a/rules/czmq/default.bash
+++ b/rules/czmq/default.bash
@@ -35,8 +35,8 @@ host_install()
 
 requires=\
 (
+    'libtool/host'
     'zeromq'
-    'libtool'
 )
 
 target_install()