Index: llvm/trunk/utils/lit/tests/selecting.py
===================================================================
--- llvm/trunk/utils/lit/tests/selecting.py
+++ llvm/trunk/utils/lit/tests/selecting.py
@@ -11,7 +11,7 @@
 
 # Check that regex-filtering based on environment variables work.
 #
-# RUN: LIT_FILTER='o[a-z]e' %{lit} %{inputs}/discovery | FileCheck --check-prefix=CHECK-FILTER-ENV %s
+# RUN: env LIT_FILTER='o[a-z]e' %{lit} %{inputs}/discovery | FileCheck --check-prefix=CHECK-FILTER-ENV %s
 # CHECK-FILTER-ENV: Testing: 2 of 5 tests