diff --git a/python/plugins/db_manager/db_plugins/postgis/plugin.py b/python/plugins/db_manager/db_plugins/postgis/plugin.py
index 5d4bebbaa94..83f01b5b686 100644
--- a/python/plugins/db_manager/db_plugins/postgis/plugin.py
+++ b/python/plugins/db_manager/db_plugins/postgis/plugin.py
@@ -292,10 +292,10 @@ class PGRasterTable(PGTable, RasterTable):
 		return uri
 
 	def toMapLayer(self):
-		from qgis.core import QgsRasterLayer
+		from qgis.core import QgsRasterLayer, QgsContrastEnhancement
 		rl = QgsRasterLayer(self.gdalUri(), self.name)
 		if rl.isValid():
-			rl.setContrastEnhancementAlgorithm("StretchToMinimumMaximum")
+			rl.setContrastEnhancement(QgsContrastEnhancement.StretchToMinimumMaximum)
 		return rl
 
 class PGTableField(TableField):