diff --git a/app/screens/sso/sso.js b/app/screens/sso/sso.js
index 91020ec7a..64080d6c1 100644
--- a/app/screens/sso/sso.js
+++ b/app/screens/sso/sso.js
@@ -235,7 +235,7 @@ class SSO extends PureComponent {
                     onNavigationStateChange={this.onNavigationStateChange}
                     onShouldStartLoadWithRequest={() => true}
                     renderLoading={this.renderLoading}
-                    onMessage={this.onMessage}
+                    onMessage={jsCode ? this.onMessage : null}
                     injectedJavaScript={jsCode}
                     onLoadEnd={this.onLoadEnd}
                 />