diff --git a/lib/active_record/connection_adapters/postgis/oid/spatial.rb b/lib/active_record/connection_adapters/postgis/oid/spatial.rb
index 9a292cae..14fd53ba 100644
--- a/lib/active_record/connection_adapters/postgis/oid/spatial.rb
+++ b/lib/active_record/connection_adapters/postgis/oid/spatial.rb
@@ -86,7 +86,16 @@ def cast_value(value)
 
           # convert WKT string into RGeo object
           def parse_wkt(string)
-            wkt_parser(string).parse(string)
+            factory = if spatial_factory.is_a?(::RGeo::Feature::Factory::Instance)
+                        spatial_factory
+                      else
+                        spatial_factory.call(support_ewkb: true, support_ewkt: true)
+                      end
+            if binary_string?(string)
+              factory.parse_wkb(string)
+            else
+              factory.parse_wkt(string)
+            end
           rescue RGeo::Error::ParseError
             nil
           end
@@ -95,14 +104,6 @@ def binary_string?(string)
             string[0] == "\x00" || string[0] == "\x01" || string[0, 4] =~ /[0-9a-fA-F]{4}/
           end
 
-          def wkt_parser(string)
-            if binary_string?(string)
-              RGeo::WKRep::WKBParser.new(spatial_factory, support_ewkb: true, default_srid: @srid)
-            else
-              RGeo::WKRep::WKTParser.new(spatial_factory, support_ewkt: true, default_srid: @srid)
-            end
-          end
-
           def factory_attrs
             {
               geo_type: @geo_type.underscore,