diff --git a/tests/fields/test_edge_data_field.py b/tests/fields/test_edge_data_field.py
index 7fe6174..090fe20 100644
--- a/tests/fields/test_edge_data_field.py
+++ b/tests/fields/test_edge_data_field.py
@@ -12,7 +12,7 @@ def field():
 @pytest.mark.parametrize('text,value,exc', [
     ('1 2\n2 3\n-1', [(1, 2), (2, 3)], None),
     ('1 2\n2 x\n-1', [(1, 2), (2, 3)], E.ParsingError),
-    ('1 2 3\n2 3\n-1', {1: [2, 3], 2: [3]}, None),
+    ('1 2 3 -1\n2 3 -1\n-1', {1: [2, 3], 2: [3]}, None),
     ('1 x 3\n2 3\n-1', {1: [2, 3], 2: [3]}, E.ParsingError),
 ])
 def test_parse(field, text, value, exc):
diff --git a/tests/fields/test_edge_list_field.py b/tests/fields/test_edge_list_field.py
index 215ce8a..cbd823a 100644
--- a/tests/fields/test_edge_list_field.py
+++ b/tests/fields/test_edge_list_field.py
@@ -9,7 +9,7 @@ def edge_list_field():
 
 
 def test_parse(edge_list_field):
-    assert edge_list_field.parse('1 2\n3 4\n-1') == [[1, 2], [3, 4]]
+    assert edge_list_field.parse('1 2\n3 4\n-1') == [(1, 2), (3, 4)]
 
 
 def test_render(edge_list_field):
diff --git a/tsplib95/fields.py b/tsplib95/fields.py
index db9b41b..6f3e084 100644
--- a/tsplib95/fields.py
+++ b/tsplib95/fields.py
@@ -237,8 +237,8 @@ class AdjacencyListField(TransformerField):
     @classmethod
     def build_transformer(cls):
         return T.MapT(key=T.FuncT(func=int),
-                      value=T.ListT(value=T.FuncT(func=int)),
-                      sep="\n",
+                      value=T.ListT(value=T.FuncT(func=int), terminal='-1'),
+                      sep='\n',
                       terminal='-1')