diff --git a/src/test/contracts/loop.ligo b/src/test/contracts/loop.ligo
index 647735953..d96753105 100644
--- a/src/test/contracts/loop.ligo
+++ b/src/test/contracts/loop.ligo
@@ -31,7 +31,7 @@ function lamby (var accu : (record st : string ; acc : int end) ; var i : int )
     accu.st := accu.st ^ "to" ;
 } with accu
 
-function for_collection (var nee : unit; var nuu : unit) : (int * string) is block {
+function for_collection_ (var nee : unit; var nuu : unit) : (int * string) is block {
   var acc : int := 0 ;
   var st : string := "to" ;
   var mylist : list(int) := list 1 ; 1 ; 1 end ;
@@ -46,7 +46,7 @@ function for_collection (var nee : unit; var nuu : unit) : (int * string) is blo
 
 } with (folded_record.acc , folded_record.st)
 
-function for_collection_ (var nee : unit; var nuu : unit) : (int * string) is block {
+function for_collection (var nee : unit) : (int * string) is block {
   var acc : int := 0 ;
   var st : string := "to" ;
   // var toto : (string * string) := ("foo","bar") ;
@@ -60,7 +60,7 @@ function for_collection_ (var nee : unit; var nuu : unit) : (int * string) is bl
     st := st^"to" ;
   end
 
-} with acc
+} with (acc, st)
 
 function dummy (const n : nat) : nat is block {
   while (False) block { skip }
diff --git a/src/test/integration_tests.ml b/src/test/integration_tests.ml
index 0088b0e31..992c21d4a 100644
--- a/src/test/integration_tests.ml
+++ b/src/test/integration_tests.ml
@@ -670,6 +670,11 @@ let loop () : unit result =
     let make_expected = fun n -> e_int (n * (n + 1) / 2) in
     expect_eq_n_pos_mid program "for_sum" make_input make_expected
   in
+  let%bind () = 
+    let input = e_unit () in
+    let expected = e_pair (e_int 3) (e_string "totototo") in
+    expect_eq program "for_collection" input expected
+  in
   ok ()
 
 (* Don't know how to assert parse error happens in this test framework