diff --git a/test/framework/sandbox/easybuild/easyblocks/t/toy.py b/test/framework/sandbox/easybuild/easyblocks/t/toy.py
index 6d6c23caf0..ef63faaabb 100644
--- a/test/framework/sandbox/easybuild/easyblocks/t/toy.py
+++ b/test/framework/sandbox/easybuild/easyblocks/t/toy.py
@@ -205,4 +205,4 @@ class EB_toy_deprecated(EB_toy):
 
     def post_install_step(self):
         """Any postprocessing for toy (deprecated)"""
-        super(EB_toy, self).post_install_step(*arg)
+        super(EB_toy, self).post_install_step()