diff --git a/changelog.d/895.change.rst b/changelog.d/895.change.rst
new file mode 100644
index 00000000..d6c2aff7
--- /dev/null
+++ b/changelog.d/895.change.rst
@@ -0,0 +1 @@
+Fix ``coverage report`` for projects who use ``attrs`` and don't set a ``--source``.
diff --git a/changelog.d/896.change.rst b/changelog.d/896.change.rst
new file mode 100644
index 00000000..d6c2aff7
--- /dev/null
+++ b/changelog.d/896.change.rst
@@ -0,0 +1 @@
+Fix ``coverage report`` for projects who use ``attrs`` and don't set a ``--source``.
diff --git a/src/attr/_make.py b/src/attr/_make.py
index 19acc457..d46f8a3e 100644
--- a/src/attr/_make.py
+++ b/src/attr/_make.py
@@ -1888,7 +1888,7 @@ def _add_eq(cls, attrs=None):
 if HAS_F_STRINGS:
 
     def _make_repr(attrs, ns, cls):
-        unique_filename = "repr"
+        unique_filename = _generate_unique_filename(cls, "repr")
         # Figure out which attributes to include, and which function to use to
         # format them. The a.repr value can be either bool or a custom
         # callable.