diff --git a/doc/source/install/index-obs.rst b/doc/source/install/index-obs.rst
index 2fc275484b..ab10d2b392 100644
--- a/doc/source/install/index-obs.rst
+++ b/doc/source/install/index-obs.rst
@@ -16,7 +16,7 @@ are included.
    The Training Labs scripts provide an automated way of deploying the
    cluster described in this Installation Guide into VirtualBox or KVM
    VMs. You will need a desktop computer or a laptop with at least 8
-   GB memory and 20 GB free storage running Linux, MaOS, or Windows.
+   GB memory and 20 GB free storage running Linux, MacOS, or Windows.
    Please see the
    `OpenStack Training Labs <https://docs.openstack.org/training_labs/>`_.
 
diff --git a/doc/source/install/index-rdo.rst b/doc/source/install/index-rdo.rst
index 77e3ede6a4..5e35fcc7b2 100644
--- a/doc/source/install/index-rdo.rst
+++ b/doc/source/install/index-rdo.rst
@@ -16,7 +16,7 @@ are included.
    The Training Labs scripts provide an automated way of deploying the
    cluster described in this Installation Guide into VirtualBox or KVM
    VMs. You will need a desktop computer or a laptop with at least 8
-   GB memory and 20 GB free storage running Linux, MaOS, or Windows.
+   GB memory and 20 GB free storage running Linux, MacOS, or Windows.
    Please see the
    `OpenStack Training Labs <https://docs.openstack.org/training_labs/>`_.
 
diff --git a/doc/source/install/index-ubuntu.rst b/doc/source/install/index-ubuntu.rst
index 4a6819658f..805f851ae7 100644
--- a/doc/source/install/index-ubuntu.rst
+++ b/doc/source/install/index-ubuntu.rst
@@ -16,7 +16,7 @@ are included.
    The Training Labs scripts provide an automated way of deploying the
    cluster described in this Installation Guide into VirtualBox or KVM
    VMs. You will need a desktop computer or a laptop with at least 8
-   GB memory and 20 GB free storage running Linux, MaOS, or Windows.
+   GB memory and 20 GB free storage running Linux, MacOS, or Windows.
    Please see the
    `OpenStack Training Labs <https://docs.openstack.org/training_labs/>`_.