diff --git a/apps/desktop/desktop_native/win_webauthn/src/plugin/types.rs b/apps/desktop/desktop_native/win_webauthn/src/plugin/types.rs
index 0dd5661ee0a..2d954271b93 100644
--- a/apps/desktop/desktop_native/win_webauthn/src/plugin/types.rs
+++ b/apps/desktop/desktop_native/win_webauthn/src/plugin/types.rs
@@ -1166,6 +1166,7 @@ fn webauthn_free_decoded_get_assertion_request(
 ) -> ());
 
 // CancelOperation Types
+#[repr(C)]
 pub(super) struct WEBAUTHN_PLUGIN_CANCEL_OPERATION_REQUEST {
     transactionId: GUID,
     cbRequestSignature: u32,
diff --git a/apps/desktop/desktop_native/win_webauthn/src/types/mod.rs b/apps/desktop/desktop_native/win_webauthn/src/types/mod.rs
index 3029bddfa37..8c5bdeab366 100644
--- a/apps/desktop/desktop_native/win_webauthn/src/types/mod.rs
+++ b/apps/desktop/desktop_native/win_webauthn/src/types/mod.rs
@@ -465,6 +465,7 @@ pub(crate) struct WEBAUTHN_CREDENTIAL_ATTESTATION {
     pub(crate) pbRegistrationResponseJSON: *const u8,
 }
 
+#[repr(C)]
 pub(crate) struct WEBAUTHN_HMAC_SECRET_SALT {
     /// Size of pbFirst.
     _cbFirst: u32,