diff --git a/plugins/input/postgis/connection_manager.hpp b/plugins/input/postgis/connection_manager.hpp
index 2354da799..7c0521bca 100644
--- a/plugins/input/postgis/connection_manager.hpp
+++ b/plugins/input/postgis/connection_manager.hpp
@@ -122,7 +122,7 @@ public:
 
         if (itr != pools_.end())
         {
-            itr->second->set_max_size(initialSize);
+            itr->second->set_initial_size(initialSize);
             itr->second->set_max_size(maxSize);
         }
         else