diff --git a/zomp/lib/otpr/zx/0.12.2/src/zx.erl b/zomp/lib/otpr/zx/0.12.2/src/zx.erl
index 383dac1..f753834 100644
--- a/zomp/lib/otpr/zx/0.12.2/src/zx.erl
+++ b/zomp/lib/otpr/zx/0.12.2/src/zx.erl
@@ -923,6 +923,7 @@ run4(PackageID, RunArgs) ->
     end.
 
 run5(Type, PackageID, Meta, Dir, Deps, NewArgs) ->
+    true = os:putenv("zx_include", filename:join(os:getenv("ZX_DIR"), "include")),
     case prepare([PackageID | Deps]) of
         ok    -> execute(Type, PackageID, Meta, Dir, NewArgs);
         Error -> Error