diff --git a/CTFd/__init__.py b/CTFd/__init__.py
index ed0a088..55a543f 100644
--- a/CTFd/__init__.py
+++ b/CTFd/__init__.py
@@ -177,7 +177,7 @@ def create_app(config="CTFd.config.Config"):
 
         reverse_proxy = app.config.get("REVERSE_PROXY")
         if reverse_proxy:
-            if "," in reverse_proxy:
+            if type(reverse_proxy) is str and "," in reverse_proxy:
                 proxyfix_args = [int(i) for i in reverse_proxy.split(",")]
                 app.wsgi_app = ProxyFix(app.wsgi_app, None, *proxyfix_args)
             else:
diff --git a/tests/test_config.py b/tests/test_config.py
index e238466..34add48 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -32,6 +32,18 @@ def test_reverse_proxy_config():
         assert app.wsgi_app.x_prefix == 1
     destroy_ctfd(app)
 
+    class ReverseProxyConfig(TestingConfig):
+        REVERSE_PROXY = True
+
+    app = create_ctfd(config=ReverseProxyConfig)
+    with app.app_context():
+        assert app.wsgi_app.x_for == 1
+        assert app.wsgi_app.x_proto == 1
+        assert app.wsgi_app.x_host == 1
+        assert app.wsgi_app.x_port == 1
+        assert app.wsgi_app.x_prefix == 1
+    destroy_ctfd(app)
+
 
 def test_server_sent_events_config():
     """Test that SERVER_SENT_EVENTS configuration behaves properly"""