diff --git a/ddtrace/contrib/internal/pymongo/client.py b/ddtrace/contrib/internal/pymongo/client.py
index f8441f3091b..d9a59bac945 100644
--- a/ddtrace/contrib/internal/pymongo/client.py
+++ b/ddtrace/contrib/internal/pymongo/client.py
@@ -101,7 +101,10 @@ def _trace_topology_select_server(func, args, kwargs):
     # Ensure the pin used on the traced mongo client is passed down to the topology instance
     # This allows us to pass the same pin in traced server objects.
     topology_instance = get_argument_value(args, kwargs, 0, "self")
-    ddtrace.Pin.get_from(topology_instance).onto(server)
+    pin = ddtrace.Pin.get_from(topology_instance)
+
+    if pin is not None:
+        pin.onto(server)
     return server
 
 
diff --git a/releasenotes/notes/pymongo-check-pin-c3cb9d1fbdc82fb3.yaml b/releasenotes/notes/pymongo-check-pin-c3cb9d1fbdc82fb3.yaml
new file mode 100644
index 00000000000..1f1ad12a669
--- /dev/null
+++ b/releasenotes/notes/pymongo-check-pin-c3cb9d1fbdc82fb3.yaml
@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    pymongo: add type checking to solve an issue where ``NoneType`` instead of expected ``Pin`` object would throw an error in ``TracedTopology`` method.