diff --git a/volatility/framework/plugins/linux/pslist.py b/volatility/framework/plugins/linux/pslist.py
index 4c8a95439..cf4a12c85 100644
--- a/volatility/framework/plugins/linux/pslist.py
+++ b/volatility/framework/plugins/linux/pslist.py
@@ -46,7 +46,7 @@ class PsList(interfaces_plugins.PluginInterface):
         if filter_list:
 
             def filter_func(x):
-                return x not in filter_list
+                return x.pid not in filter_list
 
             return filter_func
         else:
diff --git a/volatility/framework/plugins/mac/pslist.py b/volatility/framework/plugins/mac/pslist.py
index d3973a43d..dcfe393ab 100644
--- a/volatility/framework/plugins/mac/pslist.py
+++ b/volatility/framework/plugins/mac/pslist.py
@@ -54,7 +54,7 @@ class PsList(interfaces_plugins.PluginInterface):
         if filter_list:
 
             def list_filter(x):
-                return x not in filter_list
+                return x.pid not in filter_list
 
             filter_func = list_filter
         return filter_func