diff --git a/utils/lit/tests/shtest-run-at-line.py b/utils/lit/tests/shtest-run-at-line.py
index cd0e081..7e5d53b 100644
--- a/utils/lit/tests/shtest-run-at-line.py
+++ b/utils/lit/tests/shtest-run-at-line.py
@@ -1,7 +1,7 @@
 # Check that -vv makes the line number of the failing RUN command clear.
 # (-v is actually sufficient in the case of the internal shell.)
 #
-# RUN: not %{lit} -j 1 -vv %{inputs}/shtest-run-at-line > %t.out
+# RUN: env -u FILECHECK_OPTS not %{lit} -j 1 -vv %{inputs}/shtest-run-at-line > %t.out
 # RUN: FileCheck --input-file %t.out %s
 #
 # END.