diff --git a/keyserver/src/responders/user-responders.js b/keyserver/src/responders/user-responders.js
--- a/keyserver/src/responders/user-responders.js
+++ b/keyserver/src/responders/user-responders.js
@@ -157,7 +157,7 @@
 }
 
 const deleteAccountRequestInputValidator = tShape({
-  password: tPassword,
+  password: t.maybe(tPassword),
 });
 
 async function accountDeletionResponder(
diff --git a/lib/actions/user-actions.js b/lib/actions/user-actions.js
--- a/lib/actions/user-actions.js
+++ b/lib/actions/user-actions.js
@@ -57,7 +57,7 @@
 const deleteAccount = (
   callServerEndpoint: CallServerEndpoint,
 ): ((
-  password: string,
+  password: ?string,
   preRequestUserState: PreRequestUserState,
 ) => Promise<LogOutResult>) => async (password, preRequestUserState) => {
   const response = await callServerEndpoint('delete_account', { password });
diff --git a/lib/types/account-types.js b/lib/types/account-types.js
--- a/lib/types/account-types.js
+++ b/lib/types/account-types.js
@@ -72,7 +72,7 @@
 };
 
 export type DeleteAccountRequest = {
-  +password: string,
+  +password: ?string,
 };
 
 export const logInActionSources = Object.freeze({