diff --git a/t/Dockerfile b/t/Dockerfile
index cac55de..5f72046 100644
--- a/t/Dockerfile
+++ b/t/Dockerfile
@@ -14,11 +14,6 @@ RUN apt-get update && apt-get install --assume-yes lua5.1 lua-unit lua-lemock lu
 
 RUN echo './t/testrunner' >>/root/.bash_history
 
-# Create files with mode 666 and folders with mode 777 which
-# allows to delete the temporary files (aka results) for
-# non-root users (like 'jenkins' or 'developer's laptop local user')
-RUN echo 'umask 0' >>/root/.bashrc
-
 WORKDIR /code/
 
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