diff --git a/cinder/scheduler/filter_scheduler.py b/cinder/scheduler/filter_scheduler.py
index d4969a4f772..b67e0595584 100644
--- a/cinder/scheduler/filter_scheduler.py
+++ b/cinder/scheduler/filter_scheduler.py
@@ -287,7 +287,12 @@ class FilterScheduler(driver.Scheduler):
         # takes 'resource_XX' and 'volume_XX' as input respectively, copying
         # 'volume_XX' to 'resource_XX' will make both filters happy.
         volume_type = request_spec.get("volume_type")
-        resource_type = volume_type if volume_type is not None else {}
+        # When creating snapshots, the value of volume_type is None here
+        # which causes issues in filters (Eg: Bug #1856126).
+        # To prevent that, we set it as an empty dictionary here.
+        if volume_type is None:
+            volume_type = {}
+        resource_type = volume_type
 
         config_options = self._get_configuration_options()