diff --git a/dask_jobqueue/core.py b/dask_jobqueue/core.py
index 568930ba..007a7979 100644
--- a/dask_jobqueue/core.py
+++ b/dask_jobqueue/core.py
@@ -391,6 +391,7 @@ class JobQueueCluster(SpecCluster):
     )
 
     job_cls = None
+    config_name = None
 
     def __init__(
         self,
@@ -421,9 +422,12 @@ def __init__(
                 "or SGEJob with the job_cls= argument."
             )
 
-        if config_name:
+        if config_name is not None:
+            self.config_name = config_name
+
+        if self.config_name:
             if interface is None:
-                interface = dask.config.get("jobqueue.%s.interface" % config_name)
+                interface = dask.config.get("jobqueue.%s.interface" % self.config_name)
 
         scheduler = {
             "cls": Scheduler,  # Use local scheduler for now
@@ -435,8 +439,8 @@ def __init__(
                 "security": security,
             },
         }
-        if config_name:
-            kwargs["config_name"] = config_name
+        if self.config_name:
+            kwargs["config_name"] = self.config_name
         kwargs["interface"] = interface
         kwargs["protocol"] = protocol
         kwargs["security"] = security
diff --git a/dask_jobqueue/tests/test_jobqueue_core.py b/dask_jobqueue/tests/test_jobqueue_core.py
index c4acd785..e0f8523d 100644
--- a/dask_jobqueue/tests/test_jobqueue_core.py
+++ b/dask_jobqueue/tests/test_jobqueue_core.py
@@ -3,9 +3,11 @@
 import socket
 import sys
 import re
+import psutil
 
 import pytest
 
+import dask
 from dask_jobqueue import (
     JobQueueCluster,
     PBSCluster,
@@ -206,3 +208,12 @@ def test_cluster_has_cores_and_memory(Cluster):
 
     with pytest.raises(ValueError, match=r"cores=4, memory='\d+GB'"):
         Cluster(cores=4)
+
+
+@pytest.mark.asyncio
+async def test_config_interface():
+    net_if_addrs = psutil.net_if_addrs()
+    interface = list(net_if_addrs.keys())[0]
+    with dask.config.set({"jobqueue.pbs.interface": interface}):
+        cluster = PBSCluster(cores=1, memory="2GB", asynchronous=True)
+        assert interface in str(cluster.scheduler_spec)