1 files changed, 1 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/exec/StandaloneTestStrategy.java b/src/main/java/com/google/devtools/build/lib/exec/StandaloneTestStrategy.java
index 58aed286d0..b3100c2c10 100644
--- a/src/main/java/com/google/devtools/build/lib/exec/StandaloneTestStrategy.java
+++ b/src/main/java/com/google/devtools/build/lib/exec/StandaloneTestStrategy.java
@@ -72,6 +72,7 @@ public class StandaloneTestStrategy extends TestStrategy {
           .put("PYTHON_RUNFILES", TestPolicy.RUNFILES_DIR)
           .put("RUNFILES_DIR", TestPolicy.RUNFILES_DIR)
           .put("TEST_TMPDIR", TestPolicy.TEST_TMP_DIR)
+          .put("RUN_UNDER_RUNFILES", "1")
           .build();
 
   public static final TestPolicy DEFAULT_LOCAL_POLICY = new TestPolicy(ENV_VARS);