diff --git a/compos/tests/java/android/compos/test/ComposTestCase.java b/compos/tests/java/android/compos/test/ComposTestCase.java
index ff3baa2..1213ada 100644
--- a/compos/tests/java/android/compos/test/ComposTestCase.java
+++ b/compos/tests/java/android/compos/test/ComposTestCase.java
@@ -38,6 +38,8 @@
     // Binaries used in test. (These paths are valid both in host and Microdroid.)
     private static final String ODREFRESH_BIN = "/apex/com.android.art/bin/odrefresh";
     private static final String COMPOSD_CMD_BIN = "/apex/com.android.compos/bin/composd_cmd";
+    private static final String COMPOS_VERIFY_KEY_BIN =
+            "/apex/com.android.compos/bin/compos_verify_key";
 
     /** Output directory of odrefresh */
     private static final String TEST_ARTIFACTS_DIR = "test-artifacts";
@@ -148,8 +150,11 @@
         assertThat(actualChecksumSnapshot).isEqualTo(expectedChecksumSnapshot);
 
         // Expect extra files generated by CompOS exist.
-        android.assumeSuccess("test -f " + ODREFRESH_OUTPUT_DIR + "/compos.info");
-        android.assumeSuccess("test -f " + ODREFRESH_OUTPUT_DIR + "/compos.info.signature");
+        android.run("test -f " + ODREFRESH_OUTPUT_DIR + "/compos.info");
+        android.run("test -f " + ODREFRESH_OUTPUT_DIR + "/compos.info.signature");
+
+        // Expect the CompOS public key & key blob to be valid
+        android.run(COMPOS_VERIFY_KEY_BIN + " --debug --instance test");
     }
 
     private CommandResult runOdrefresh(CommandRunner android, String command) throws Exception {