diff --git a/ext/gd/tests/bug48555.phpt b/ext/gd/tests/bug48555.phpt
index a505f003300..24b142a2791 100644
--- a/ext/gd/tests/bug48555.phpt
+++ b/ext/gd/tests/bug48555.phpt
@@ -3,6 +3,7 @@ Bug #48555 (ImageFTBBox() differs from previous versions for texts with new line
 --SKIPIF--
 <?php
 	if(!extension_loaded('gd')){ die('skip gd extension not available'); }
+	if(!function_exists('imageftbbox')) die('skip imageftbbox() not available');
 ?>
 --FILE--
 <?php