1 files changed, 1 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/SourceManifestAction.java b/src/main/java/com/google/devtools/build/lib/analysis/SourceManifestAction.java
index 6d726e760d..73e8c40b7f 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/SourceManifestAction.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/SourceManifestAction.java
@@ -192,6 +192,7 @@ public final class SourceManifestAction extends AbstractFileWriteAction {
   protected String computeKey() {
     Fingerprint f = new Fingerprint();
     f.addString(GUID);
+    f.addBoolean(runfiles.getLegacyExternalRunfiles());
     Map<PathFragment, Artifact> symlinks = runfiles.getSymlinksAsMap(null);
     f.addInt(symlinks.size());
     for (Map.Entry<PathFragment, Artifact> symlink : symlinks.entrySet()) {