diff --git a/tests/core/t_string.ml b/tests/core/t_string.ml
index b4612c38..ec84633c 100644
--- a/tests/core/t_string.ml
+++ b/tests/core/t_string.ml
@@ -1,6 +1,7 @@
 module T = (val Containers_testlib.make ~__FILE__ ())
 include T
-open CCString.Stdlib;;
+open CCString
+open Stdlib;;
 
 q Q.printable_string (fun s -> s = rev (rev s));;
 q Q.printable_string (fun s -> length s = length (rev s));;