diff --git a/labgrid/remote/client.py b/labgrid/remote/client.py
index 2b44796d3..9b6e602da 100755
--- a/labgrid/remote/client.py
+++ b/labgrid/remote/client.py
@@ -1759,6 +1759,8 @@ def __str__(self):
 
 
 def main():
+    import inspect
+
     basicConfig(
         level=logging.WARNING,
         stream=sys.stderr,
@@ -2214,7 +2216,7 @@ def main():
             logging.debug("Started session")
 
             try:
-                if asyncio.iscoroutinefunction(args.func):
+                if inspect.iscoroutinefunction(args.func):
                     if getattr(args.func, "needs_target", False):
                         place = session.get_acquired_place()
                         target = session._get_target(place)