diff --git a/changelogs/fragments/volume-attachment-automount.yml b/changelogs/fragments/volume-attachment-automount.yml
new file mode 100644
index 0000000..c019af0
--- /dev/null
+++ b/changelogs/fragments/volume-attachment-automount.yml
@@ -0,0 +1,2 @@
+trivial:
+  volume_attachment: Change `automount` default value from `null` to `False`
diff --git a/plugins/modules/volume_attachment.py b/plugins/modules/volume_attachment.py
index 3e8dddb..ad5a70f 100644
--- a/plugins/modules/volume_attachment.py
+++ b/plugins/modules/volume_attachment.py
@@ -34,6 +34,7 @@ options:
         description:
             - Automatically mount the Volume in the Server.
         type: bool
+        default: False
     state:
         description:
             - State of the Volume.
@@ -175,7 +176,7 @@ class AnsibleHCloudVolumeAttachment(AnsibleHCloud):
             argument_spec=dict(
                 volume={"type": "str", "required": True},
                 server={"type": "str"},
-                automount={"type": "bool"},
+                automount={"type": "bool", "default": False},
                 state={
                     "choices": ["present", "absent"],
                     "default": "present",