diff --git a/core/jni/android_os_VintfObject.cpp b/core/jni/android_os_VintfObject.cpp
index fa9379ee20750..8b4cc91565b64 100644
--- a/core/jni/android_os_VintfObject.cpp
+++ b/core/jni/android_os_VintfObject.cpp
@@ -102,7 +102,10 @@ static jint android_os_VintfObject_verify(JNIEnv* env, jclass, jobjectArray pack
         cPackageInfo[i] = cString;
         env->ReleaseStringUTFChars(element, cString);
     }
-    int32_t status = VintfObject::CheckCompatibility(cPackageInfo);
+    std::string error;
+    int32_t status = VintfObject::CheckCompatibility(cPackageInfo, &error);
+    if (status)
+        LOG(WARNING) << "VintfObject.verify() returns " << status << ": " << error;
     return status;
 }