diff --git a/app/src/ui/lib/sign-in.tsx b/app/src/ui/lib/sign-in.tsx
index 208a1da62..e0861bf4b 100644
--- a/app/src/ui/lib/sign-in.tsx
+++ b/app/src/ui/lib/sign-in.tsx
@@ -41,7 +41,7 @@ export class SignIn extends React.Component<ISignInProps, {}> {
 
   private renderEndpointEntryStep(state: IEndpointEntryState) {
     const children = this.props.children as ReadonlyArray<JSX.Element> | null
-    if (!children || !children.length) {
+    if (!children || (Array.isArray(children) && !children.length)) {
       console.error(
         'unexpected child elements provided to EnterpriseServerEntry - someone should look into this!'
       )
@@ -60,7 +60,7 @@ export class SignIn extends React.Component<ISignInProps, {}> {
 
   private renderAuthenticationStep(state: IAuthenticationState) {
     const children = this.props.children as ReadonlyArray<JSX.Element> | null
-    if (!children || !children.length) {
+    if (!children || (Array.isArray(children) && !children.length)) {
       console.error(
         'unexpected child elements provided to AuthenticationForm - someone should look into this!'
       )