diff --git a/frontend/src/lib/components/ApiConnectForm.svelte b/frontend/src/lib/components/ApiConnectForm.svelte
index a910e82533..a4e23f874b 100644
--- a/frontend/src/lib/components/ApiConnectForm.svelte
+++ b/frontend/src/lib/components/ApiConnectForm.svelte
@@ -84,7 +84,7 @@
 					user,
 					password: password || args?.password,
 					host,
-					port: port || args?.port,
+					port: (port ? Number(port) : undefined) || args?.port,
 					dbname: dbname || args?.dbname,
 					sslmode: sslmode || args?.sslmode
 				},