diff --git a/src/common/SmartUrlInput.js b/src/common/SmartUrlInput.js
index 5163d64791c..d2486c59c98 100644
--- a/src/common/SmartUrlInput.js
+++ b/src/common/SmartUrlInput.js
@@ -8,7 +8,6 @@ import type { ViewStyleProp } from 'react-native/Libraries/StyleSheet/StyleSheet
 import type { AppNavigationProp } from '../nav/AppNavigator';
 import { ThemeContext, createStyleSheet } from '../styles';
 import { autocompleteRealmPieces, autocompleteRealm, fixRealmUrl } from '../utils/url';
-import type { Protocol } from '../utils/url';
 import ZulipText from './ZulipText';
 
 const styles = createStyleSheet({
@@ -29,22 +28,6 @@ const styles = createStyleSheet({
 });
 
 type Props = $ReadOnly<{|
-  /**
-   * The protocol which will be used if the user doesn't specify one.
-   * Should almost certainly be "https://".
-   */
-  defaultProtocol: Protocol,
-  /**
-   * The example organization name that will be displayed while the
-   * entry field is empty. Appears, briefly, as the initial (lowest-
-   * level) component of the realm's domain.
-   */
-  defaultOrganization: string,
-  /**
-   * The default domain to which the user's input will be appended, if
-   * it appears not to contain an explicit domain.
-   */
-  defaultDomain: string,
   // TODO: Currently this type is acceptable because the only
   // `navigation` prop we pass to a `SmartUrlInput` instance is the
   // one from a component on AppNavigator.
@@ -99,15 +82,7 @@ function useRn19366Workaround(textInputRef) {
 }
 
 export default function SmartUrlInput(props: Props): Node {
-  const {
-    defaultProtocol,
-    defaultOrganization,
-    defaultDomain,
-    style,
-    onChangeText,
-    onSubmitEditing,
-    enablesReturnKeyAutomatically,
-  } = props;
+  const { style, onChangeText, onSubmitEditing, enablesReturnKeyAutomatically } = props;
 
   // We should replace the fixme with
   // `React$ElementRef<typeof TextInput>` when we can. Currently, that
@@ -140,12 +115,10 @@ export default function SmartUrlInput(props: Props): Node {
       setValue(_value);
 
       onChangeText(
-        fixRealmUrl(
-          autocompleteRealm(_value, { protocol: defaultProtocol, domain: defaultDomain }),
-        ),
+        fixRealmUrl(autocompleteRealm(_value, { protocol: 'https://', domain: 'zulipchat.com' })),
       );
     },
-    [defaultDomain, defaultProtocol, onChangeText],
+    [onChangeText],
   );
 
   // When the "placeholder parts" are pressed, i.e., the parts of the URL
@@ -178,8 +151,8 @@ export default function SmartUrlInput(props: Props): Node {
   );
 
   const [prefix, , suffix] = autocompleteRealmPieces(value, {
-    domain: defaultDomain,
-    protocol: defaultProtocol,
+    domain: 'zulipchat.com',
+    protocol: 'https://',
   });
 
   return (
@@ -203,7 +176,7 @@ export default function SmartUrlInput(props: Props): Node {
         enablesReturnKeyAutomatically={enablesReturnKeyAutomatically}
         ref={textInputRef}
       />
-      {!value && renderPlaceholderPart(defaultOrganization)}
+      {!value && renderPlaceholderPart('your-org')}
       {suffix !== null && renderPlaceholderPart(suffix)}
     </View>
   );
diff --git a/src/start/RealmInputScreen.js b/src/start/RealmInputScreen.js
index 81726e4f312..b0d4d9d1149 100644
--- a/src/start/RealmInputScreen.js
+++ b/src/start/RealmInputScreen.js
@@ -90,9 +90,6 @@ export default class RealmInputScreen extends PureComponent<Props, State> {
         <SmartUrlInput
           style={styles.input}
           navigation={navigation}
-          defaultProtocol="https://"
-          defaultOrganization="your-org"
-          defaultDomain="zulipchat.com"
           onChangeText={this.handleRealmChange}
           onSubmitEditing={this.tryRealm}
           enablesReturnKeyAutomatically