diff --git a/backend/windmill-api/openapi.yaml b/backend/windmill-api/openapi.yaml
index 660fca588d..e7a92394e5 100644
--- a/backend/windmill-api/openapi.yaml
+++ b/backend/windmill-api/openapi.yaml
@@ -2643,8 +2643,7 @@ paths:
                 type: object
                 properties:
                   extra_params:
-                    additionalProperties:
-                      type: string
+                    type: object
                   scopes:
                     type: array
                     items:
diff --git a/frontend/src/lib/components/AppConnectInner.svelte b/frontend/src/lib/components/AppConnectInner.svelte
index 9b6de1cfed..ee91968765 100644
--- a/frontend/src/lib/components/AppConnectInner.svelte
+++ b/frontend/src/lib/components/AppConnectInner.svelte
@@ -172,7 +172,7 @@
 	async function getScopesAndParams() {
 		const connect = await OauthService.getOauthConnect({ client: resourceType })
 		scopes = connect.scopes ?? []
-		extra_params = Object.entries(connect.extra_params ?? {})
+		extra_params = Object.entries(connect.extra_params ?? {}) as [string, string][]
 	}
 
 	async function getResourceTypeInfo() {