diff --git a/python/plugins/db_manager/db_plugins/postgis/plugin.py b/python/plugins/db_manager/db_plugins/postgis/plugin.py
index f710997c00c6..43595c2e0778 100644
--- a/python/plugins/db_manager/db_plugins/postgis/plugin.py
+++ b/python/plugins/db_manager/db_plugins/postgis/plugin.py
@@ -308,6 +308,24 @@ def runAction(self, action):
             return True
         return VectorTable.runAction(self, action)
 
+    def geometryType(self):
+        """ Returns the proper WKT type.
+        PostGIS records type like this:
+        | WKT Type     | geomType    | geomDim |
+        |--------------|-------------|---------|
+        | LineString   | LineString  | 2       |
+        | LineStringZ  | LineString  | 3       |
+        | LineStringM  | LineStringM | 3       |
+        | LineStringZM | LineString  | 4       |
+        """
+        geometryType = self.geomType
+        if self.geomDim == 3 and self.geomType[-1] != "M":
+            geometryType += "Z"
+        elif self.geomDim == 4:
+            geometryType += "ZM"
+
+        return geometryType
+
 
 class PGRasterTable(PGTable, RasterTable):
 
diff --git a/python/plugins/db_manager/db_tree.py b/python/plugins/db_manager/db_tree.py
index 87a0bd7727ec..97a4f3e4824c 100644
--- a/python/plugins/db_manager/db_tree.py
+++ b/python/plugins/db_manager/db_tree.py
@@ -159,7 +159,7 @@ def delete(self):
     def addLayer(self):
         table = self.currentTable()
         if table is not None:
-            layer = table.toMapLayer()
+            layer = table.toMapLayer(table.geometryType())
             layers = QgsProject.instance().addMapLayers([layer])
             if len(layers) != 1:
                 QgsMessageLog.logMessage(