diff --git a/main.yml b/main.yml
index 237d0c5..19ce1ea 100644
--- a/main.yml
+++ b/main.yml
@@ -199,11 +199,6 @@
       loop: "{{ groups['cluster'] }}"
       become: true
 
-    # If this is not done, the nodes will fail to connect to each other
-    # causing the playbook to hang at 'Run the benchmark.'
-    - include_tasks: firewall/configure-firewall.yml
-      when: ansible_os_family == "RedHat"
-
 - name: Run linpack benchmark.
   hosts: cluster
   become: false
@@ -226,6 +221,11 @@
         dest: "{{ hpl_root }}/tmp/hpl-2.3/bin/rpi/HPL.dat"
         mode: 0644
 
+    # If this is not done, the nodes will fail to connect to each other
+    # causing the playbook to hang at 'Run the benchmark.'
+    - include_tasks: firewall/configure-firewall.yml
+      when: ansible_os_family == "RedHat"
+
     - name: Run the benchmark.
       ansible.builtin.command: mpirun -f cluster-hosts ./xhpl
       args: