diff --git a/src/prefect/cli/server.py b/src/prefect/cli/server.py
index d325085692c9..83018d67aa81 100644
--- a/src/prefect/cli/server.py
+++ b/src/prefect/cli/server.py
@@ -173,7 +173,7 @@ async def start(
 ):
     """Start a Prefect server instance"""
 
-    if is_interactive:
+    if is_interactive():
         try:
             prestart_check()
         except Exception: