diff --git a/roles/mellanox_drivers/tasks/main.yml b/roles/mellanox_drivers/tasks/main.yml
index 45dbeb441e69a0354d320771e86dea709ea11975..08380a354f5ea1d3040dec5bdd477da60065582d 100644
--- a/roles/mellanox_drivers/tasks/main.yml
+++ b/roles/mellanox_drivers/tasks/main.yml
@@ -223,7 +223,7 @@
     chdir: "/tmp/{{ MELLANOX_DRIVER_SRC }}"
   become: true
   become_user: root
-  when: install_now and buildKMOD!=True and ansible_os_family == "Redhat"
+  when: install_now and buildKMOD!=True and ansible_os_family == "RedHat"
 
 - name: build and install drivers Redhat
   shell: ./mlnxofedinstall -q --skip-repo --without-fw-update --add-kernel-support --hpc --kmp --all
@@ -231,7 +231,7 @@
     chdir: "/tmp/{{ MELLANOX_DRIVER_SRC }}"
   become: true
   become_user: root
-  when: install_now and buildKMOD==True and ansible_os_family == "Redhat"
+  when: install_now and buildKMOD==True and ansible_os_family == "RedHat"
 
 - name: build and install drivers Debian
   shell: ./mlnxofedinstall -q --skip-repo --without-fw-update --hpc --dkms