diff --git a/tests/test_closed.diff b/tests/test_closed.diff
index 581cfdf..ba9b759 100644
--- a/tests/test_closed.diff
+++ b/tests/test_closed.diff
@@ -246,10 +246,10 @@ index 525e25d..ba4e68d 100644
 -   kept together as one todo
 - */}
 - - [ ] TODO: An inline todo that's NOT a comment (what)
-diff --git a/tests/example_file.py b/tests/example_file.R
+diff --git a/tests/example_file.r b/tests/example_file.r
 index 525e25d..ba4e68d 100644
---- a/tests/example_file.R
-+++ b/tests/example_file.R
+--- a/tests/example_file.r
++++ b/tests/example_file.r
 @@ -1,23 +1,2 @@
 hello_world <- function() {
 -    # TODO: Come up with a more imaginative greeting
@@ -258,4 +258,4 @@ hello_world <- function() {
 -    # TODO: Do more stuff
 -    #  This function should probably do something more interesting
 -    #  labels: help wanted
-}
\ No newline at end of file
+}