diff --git a/core/jni/android_os_HwBlob.cpp b/core/jni/android_os_HwBlob.cpp
index 8590ecf3bb19c..d00f17ffee044 100644
--- a/core/jni/android_os_HwBlob.cpp
+++ b/core/jni/android_os_HwBlob.cpp
@@ -90,7 +90,7 @@ JHwBlob::JHwBlob(JNIEnv *env, jobject thiz, size_t size)
     mObject = env->NewWeakGlobalRef(thiz);
 
     if (size > 0) {
-        mBuffer = malloc(size);
+        mBuffer = calloc(size, 1);
     }
 }