diff --git a/internal/variant/variant.go b/internal/variant/variant.go
index 8e8ea3d9c..3db996b0e 100644
--- a/internal/variant/variant.go
+++ b/internal/variant/variant.go
@@ -197,6 +197,7 @@ func (QEMUTDX) OID() asn1.ObjectIdentifier {
 	return asn1.ObjectIdentifier{1, 3, 9900, 5, 99}
 }
 
+// String returns the string representation of the OID.
 func (QEMUTDX) String() string {
 	return qemuTDX
 }