diff --git a/grade/__init__.py b/grade/__init__.py
index 34cfe49..2d71831 100644
--- a/grade/__init__.py
+++ b/grade/__init__.py
@@ -1 +1 @@
-__version__ = "v2.1.4"
+__version__ = "v2.1.5"
diff --git a/grade/pipeline/partialcredit.py b/grade/pipeline/partialcredit.py
index 1cc6310..ea4b219 100644
--- a/grade/pipeline/partialcredit.py
+++ b/grade/pipeline/partialcredit.py
@@ -54,5 +54,7 @@ def __call__(self):
             except Exception as e:
                 logging.exception(e, exc_info=False)
             else:
-                self._score += self.value.popleft()
+                self._score += self.value[0]
+            finally:
+                self.value.popleft()
         return self
diff --git a/test/test_pipeline/test_partialcredit.py b/test/test_pipeline/test_partialcredit.py
index d287658..9a1ace6 100644
--- a/test/test_pipeline/test_partialcredit.py
+++ b/test/test_pipeline/test_partialcredit.py
@@ -48,7 +48,7 @@ def test_value_list_some_fail(self):
         logging.disable(logging.CRITICAL)
         results = PartialCredit(pipelines, values)()
         logging.disable(logging.NOTSET)
-        self.assertEqual(results.score, 11)
+        self.assertEqual(results.score, 20)
         return
 
     def test_value_list_all_fail(self):