diff --git a/Lib/contextlib.py b/Lib/contextlib.py
@@ -164,7 +164,9 @@ def __exit__(self, typ, value, traceback):
                # Suppress StopIteration *unless* it's the same exception that
                # was passed to throw().  This prevents a StopIteration
                # raised inside the "with" statement from being suppressed.
-                return exc is not value
            except RuntimeError as exc:
                # Don't re-raise the passed in exception. (issue27122)
                if exc is value: