diff --git a/apps/files_external/src/components/AddExternalStorageDialog/BackendConfiguration.vue b/apps/files_external/src/components/AddExternalStorageDialog/BackendConfiguration.vue
index 49a4dccdd4ffa..e7a1972ebe355 100644
--- a/apps/files_external/src/components/AddExternalStorageDialog/BackendConfiguration.vue
+++ b/apps/files_external/src/components/AddExternalStorageDialog/BackendConfiguration.vue
@@ -20,9 +20,10 @@ const props = defineProps<{
 watch(() => props.configuration, () => {
 	for (const key in props.configuration) {
 		if (!(key in modelValue.value)) {
-			modelValue.value[key] = props.configuration[key]?.type === ConfigurationType.Boolean
+			modelValue.value[key] = props.configuration[key]?.defaultValue ?? (props.configuration[key]?.type === ConfigurationType.Boolean
 				? false
 				: ''
+			)
 		}
 	}
 }, { immediate: true })
diff --git a/apps/files_external/src/types.ts b/apps/files_external/src/types.ts
index 80a5122b7c86a..a71022e4c5864 100644
--- a/apps/files_external/src/types.ts
+++ b/apps/files_external/src/types.ts
@@ -21,6 +21,9 @@ export const ConfigurationType = Object.freeze({
 
 export const ConfigurationFlag = Object.freeze({
 	None: 0,
+	/**
+	 * Indicates that the configuration option is optional and can be left empty ("not required")
+	 */
 	Optional: 1,
 	UserProvided: 2,
 	Hidden: 4,
@@ -94,6 +97,11 @@ export interface IConfigurationOption {
 	 * Optional tooltip for the configuration option
 	 */
 	tooltip?: string
+
+	/**
+	 * Default value for the configuration option.
+	 */
+	defaultValue?: string | boolean
 }
 
 export interface IAuthMechanism {