diff --git a/src/components/RedocStandalone.tsx b/src/components/RedocStandalone.tsx
index 2c2923bf..89cd26cf 100644
--- a/src/components/RedocStandalone.tsx
+++ b/src/components/RedocStandalone.tsx
@@ -1,4 +1,5 @@
 import * as React from 'react';
+import * as PropTypes from 'prop-types';
 
 import { Loading } from './Loading/Loading';
 import { StoreProvider } from './StoreProvider';
@@ -31,6 +32,7 @@ export class RedocStandalone extends React.Component<RedocStandaloneProps> {
       }
       return null;
     },
+    options: PropTypes.object,
   };
 
   render() {
diff --git a/src/components/SecurityDefs/SecurityDefs.tsx b/src/components/SecurityDefs/SecurityDefs.tsx
index d5340171..4302ca99 100644
--- a/src/components/SecurityDefs/SecurityDefs.tsx
+++ b/src/components/SecurityDefs/SecurityDefs.tsx
@@ -55,7 +55,7 @@ export class OAuthFlow extends React.PureComponent<OAuthFlowProps> {
           </div>
           <ul>
             {Object.keys(flow!.scopes).map(scope => (
-              <li>
+              <li key={scope}>
                 <code>{scope}</code> - {flow!.scopes[scope]}
               </li>
             ))}
diff --git a/src/services/RedocNormalizedOptions.ts b/src/services/RedocNormalizedOptions.ts
index 777a9175..521e9852 100644
--- a/src/services/RedocNormalizedOptions.ts
+++ b/src/services/RedocNormalizedOptions.ts
@@ -33,7 +33,7 @@ export class RedocNormalizedOptions {
   untrustedSpec: boolean;
 
   constructor(raw: RedocRawOptions) {
-    this.theme = mergeObjects({} as any, raw.theme || {}, defaultTheme);
+    this.theme = mergeObjects({} as any, defaultTheme, raw.theme || {});
     this.scrollYOffset = RedocNormalizedOptions.normalizeScrollYOffset(raw.scrollYOffset);
     this.hideHostname = RedocNormalizedOptions.normalizeHideHostname(raw.hideHostname);
     this.expandResponses = RedocNormalizedOptions.normalizeExpandResponses(raw.expandResponses);