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 0ff134924fd446..ae70d768df5c57 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
@@ -738,6 +738,12 @@ private TestAttemptResult runTestAttempt(
               .getOutputMetadataStore()
               .getTreeArtifactChildren(
                   (SpecialArtifact) testAction.getCoverageDirectoryTreeArtifact());
+      ImmutableSet<ActionInput> coverageSpawnMetadata =
+          ImmutableSet.<ActionInput>builder()
+              .addAll(expandedCoverageDir)
+              .add(testAction.getCoverageDirectoryTreeArtifact())
+              .build();
+
       Spawn coveragePostProcessingSpawn =
           createCoveragePostProcessingSpawn(
               actionExecutionContext,
@@ -757,7 +763,7 @@ private TestAttemptResult runTestAttempt(
       ActionExecutionContext coverageActionExecutionContext =
           actionExecutionContext
               .withFileOutErr(coverageOutErr)
-              .withOutputsAsInputs(expandedCoverageDir);
+              .withOutputsAsInputs(coverageSpawnMetadata);
 
       writeOutFile(coverageOutErr.getErrorPath(), coverageOutErr.getOutputPath());
       appendCoverageLog(coverageOutErr, fileOutErr);