diff --git a/tests/utils/hostutils/src/com/android/internal/util/test/SystemPreparer.java b/tests/utils/hostutils/src/com/android/internal/util/test/SystemPreparer.java
index f80af034fa2be..ec47550e3dddd 100644
--- a/tests/utils/hostutils/src/com/android/internal/util/test/SystemPreparer.java
+++ b/tests/utils/hostutils/src/com/android/internal/util/test/SystemPreparer.java
@@ -214,7 +214,7 @@ public class SystemPreparer extends ExternalResource {
     private File copyResourceToTemp(String resourcePath) throws IOException {
         final File tempFile = mHostTempFolder.newFile();
         final ClassLoader classLoader = getClass().getClassLoader();
-        try (InputStream assetIs = classLoader.getResource(resourcePath).openStream();
+        try (InputStream assetIs = classLoader.getResourceAsStream(resourcePath);
              FileOutputStream assetOs = new FileOutputStream(tempFile)) {
             if (assetIs == null) {
                 throw new IllegalStateException("Failed to find resource " + resourcePath);