diff --git a/src/path.ml b/src/path.ml
index c1bce7d3..926b66af 100644
--- a/src/path.ml
+++ b/src/path.ml
@@ -474,7 +474,7 @@ let change_extension ~ext t =
 
 let extension = Filename.extension
 
-let pp = Format.pp_print_string
+let pp ppf t = Format.pp_print_string ppf (to_string t)
 
 let drop_prefix t ~prefix =
   let t = to_string t in
diff --git a/test/unit-tests/path.mlt b/test/unit-tests/path.mlt
index 35e1a47e..aabf529b 100644
--- a/test/unit-tests/path.mlt
+++ b/test/unit-tests/path.mlt
@@ -40,7 +40,7 @@ Path.(descendant Path.root ~of_:(r "foo"))
 
 Path.(descendant Path.root ~of_:Path.root)
 [%%expect{|
-- : Jbuilder.Path.t option = Some 
+- : Jbuilder.Path.t option = Some .
 |}]
 
 Path.(descendant (r "foo") ~of_:Path.root)