From 399fba21249ac7094ac2b3f7ee38d31282837c04 Mon Sep 17 00:00:00 2001
From: John Cupitt <jcupitt@gmail.com>
Date: Sat, 11 Jun 2022 14:03:45 +0100
Subject: [PATCH] fix error in prev commit

---
 libvips/iofuncs/init.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/libvips/iofuncs/init.c b/libvips/iofuncs/init.c
index 618eabd8..5b6cf91b 100644
--- a/libvips/iofuncs/init.c
+++ b/libvips/iofuncs/init.c
@@ -1313,8 +1313,13 @@ vips_block_untrusted_set_operation( VipsOperationClass *class, gboolean *state )
 {
 	g_assert( VIPS_IS_OPERATION_CLASS( class ) );
 
-	if( class->flags & VIPS_OPERATION_UNTRUSTED )
-		vips_operation_block_set( VIPS_OBJECT_CLASS( class ), *state );
+	if( class->flags & VIPS_OPERATION_UNTRUSTED ) {
+		GTypeClass *type_class =  (GTypeClass *) class;
+		GType gtype = type_class->g_type;
+		const char *name = g_type_name( gtype );
+
+		vips_operation_block_set( name, *state );
+	}
 
 	return( NULL );
 }