diff --git a/src/main/java/com/google/devtools/build/lib/sandbox/NamespaceSandboxRunner.java b/src/main/java/com/google/devtools/build/lib/sandbox/NamespaceSandboxRunner.java
index 74649e615d7207..e16ac70e1c2c08 100644
--- a/src/main/java/com/google/devtools/build/lib/sandbox/NamespaceSandboxRunner.java
+++ b/src/main/java/com/google/devtools/build/lib/sandbox/NamespaceSandboxRunner.java
@@ -163,9 +163,7 @@ private void copyOutputs(Collection<? extends ActionInput> outputs) throws IOExc
       Path source = sandboxExecRoot.getRelative(output.getExecPathString());
       Path target = execRoot.getRelative(output.getExecPathString());
       FileSystemUtils.createDirectoryAndParents(target.getParentDirectory());
-      if (source.isFile()) {
-        Files.move(new File(source.getPathString()), new File(target.getPathString()));
-      }
+      Files.move(source.getPathFile(), target.getPathFile());
     }
   }