diff --git a/icon-validator/validate-icon.c b/icon-validator/validate-icon.c
index 9e885070..44fea035 100644
--- a/icon-validator/validate-icon.c
+++ b/icon-validator/validate-icon.c
@@ -200,6 +200,8 @@ rerun_in_sandbox (const char *arg_width,
add_args (args, "--setenv", "G_MESSAGES_DEBUG", g_getenv ("G_MESSAGES_DEBUG"), NULL);
if (g_getenv ("G_MESSAGES_PREFIXED"))
add_args (args, "--setenv", "G_MESSAGES_PREFIXED", g_getenv ("G_MESSAGES_PREFIXED"), NULL);
+ if (g_getenv ("GDK_PIXBUF_MODULE_FILE"))
+ add_args (args, "--setenv", "GDK_PIXBUF_MODULE_FILE", g_getenv ("GDK_PIXBUF_MODULE_FILE"), NULL);
add_args (args, validate_icon, arg_width, arg_height, filename, NULL);
g_ptr_array_add (args, NULL);