diff --git a/fedora b/fedora
index 2fe2d3d..696c02d 100644
--- a/fedora
+++ b/fedora
@@ -33,8 +33,9 @@ RUN if [ "${INTEL}" = "yes" ]; then \
 fi
 
 RUN useradd -m -G wheel -u 1001 votca
-RUN echo '%wheel ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+RUN sed -i -e '/[^#].*wheel/s/^/# /' -e /wheel.*NOPASSWD/s/^# //' /etc/sudoers
 RUN cat /etc/sudoers
+
 USER votca
 ENV PATH=/usr/lib64/openmpi/bin${PATH:+:}${PATH}
 ENV PATH=${INTEL:+/opt/intel/oneapi/compiler/latest/bin}${PATH:+:}${PATH}