diff --git a/plugin.py b/plugin.py
index b8450a3..a914a60 100644
--- a/plugin.py
+++ b/plugin.py
@@ -171,7 +171,7 @@ def set_database_connection(self, connection=None, crs=None):
         settings_plugin.beginGroup(metadata.name().replace(" ", "_"))
         settings_postgis.beginGroup('PostgreSQL/connections')
         self.connection = connection
-        self.crs = crs
+        self.crs = QgsCoordinateReferenceSystem(crs)
         if not bool(self.connection):
             # fetch pre-chosen database connection
             self.connection = settings_plugin.value("DatabaseConnection", None)