diff --git a/ets2panda/test/test-lists/ets-runtime/ets-runtime-ignored.txt b/ets2panda/test/test-lists/ets-runtime/ets-runtime-ignored.txt
index af11a06df6b9db681c76b2b0ab710302cd5e37c2..1d38d11a13b8af45d6fd2076cc39ff1ff7b1bcb5 100644
--- a/ets2panda/test/test-lists/ets-runtime/ets-runtime-ignored.txt
+++ b/ets2panda/test/test-lists/ets-runtime/ets-runtime-ignored.txt
@@ -121,3 +121,7 @@ RecursiveTypeAlias10.ets
 first_match/namespace.ets
 first_match/namespace2.ets
 first_match/namespace3.ets
+
+# 27863
+UncheckedCasts.ets
+