diff --git a/plugins/modules/proxmox_kvm.py b/plugins/modules/proxmox_kvm.py
index c3a61a0de2..d352022440 100644
--- a/plugins/modules/proxmox_kvm.py
+++ b/plugins/modules/proxmox_kvm.py
@@ -415,6 +415,14 @@ options:
   smbios:
     description:
       - Specifies SMBIOS type 1 fields.
+      - "Comma separated, Base64 encoded (optional) SMBIOS properties:"
+      - V([base64=<1|0>] [,family=<Base64 encoded string>])
+      - V([,manufacturer=<Base64 encoded string>])
+      - V([,product=<Base64 encoded string>])
+      - V([,serial=<Base64 encoded string>])
+      - V([,sku=<Base64 encoded string>])
+      - V([,uuid=<UUID>])
+      - V([,version=<Base64 encoded string>])
     type: str
   snapname:
     description: