diff --git a/software/erp5testnode/software.cfg b/software/erp5testnode/software.cfg
index dadfcef69238f8e01da007b66b64d36769a0f4f1..1ea204ad9d6da60e0dc0870d47be61c81bc9d00d 100644
--- a/software/erp5testnode/software.cfg
+++ b/software/erp5testnode/software.cfg
@@ -44,6 +44,11 @@ allow-hosts =
   psutil.googlecode.com
   www.dabeaz.com
 
+# XXX: Workaround of SlapOS limitation
+# Unzippig of eggs is required, as SlapOS do not yet provide nicely working
+# development / fast switching environment for whole software
+unzip = true
+
 [eggs]
 recipe = zc.recipe.egg
 eggs =