diff --git a/test/mri/excludes/Reline/Test.rb b/test/mri/excludes/Reline/Test.rb
new file mode 100644
index 00000000000..6a99c4ed39c
--- /dev/null
+++ b/test/mri/excludes/Reline/Test.rb
@@ -0,0 +1 @@
+exclude :test_tty_amibuous_width, 'too strict string coercion in Subspawn'