diff --git a/src/providers/postgres/qgspostgresconn.cpp b/src/providers/postgres/qgspostgresconn.cpp
index 5a97336a9aa0..29c851e60387 100644
--- a/src/providers/postgres/qgspostgresconn.cpp
+++ b/src/providers/postgres/qgspostgresconn.cpp
@@ -866,7 +866,7 @@ QString QgsPostgresConn::postgisVersion()
 
   mGotPostgisVersion = true;
 
-  result = PQexec( "SELECT 'pointcloud_columns'::regclass", false );
+  result = PQexec( "SELECT oid FROM pg_catalog.pg_extension WHERE extname = 'pointcloud_postgis'", false );
   mPointcloudAvailable = result.PQntuples() == 1;
 
   return mPostgisVersionInfo;