diff --git a/core/jni/android_util_EventLog.cpp b/core/jni/android_util_EventLog.cpp
index b7d44233afef9..25934200e0c99 100644
--- a/core/jni/android_util_EventLog.cpp
+++ b/core/jni/android_util_EventLog.cpp
@@ -21,6 +21,8 @@
 #include "jni.h"
 #include "log/logger.h"
 
+#define UNUSED  __attribute__((__unused__))
+
 // The size of the tag number comes out of the payload size.
 #define MAX_EVENT_PAYLOAD (LOGGER_ENTRY_MAX_PAYLOAD - sizeof(int32_t))
 
@@ -44,7 +46,8 @@ static jclass gStringClass;
  * In class android.util.EventLog:
  *  static native int writeEvent(int tag, int value)
  */
-static jint android_util_EventLog_writeEvent_Integer(JNIEnv* env, jobject clazz,
+static jint android_util_EventLog_writeEvent_Integer(JNIEnv* env UNUSED,
+                                                     jobject clazz UNUSED,
                                                      jint tag, jint value)
 {
     return android_btWriteLog(tag, EVENT_TYPE_INT, &value, sizeof(value));
@@ -54,7 +57,8 @@ static jint android_util_EventLog_writeEvent_Integer(JNIEnv* env, jobject clazz,
  * In class android.util.EventLog:
  *  static native int writeEvent(long tag, long value)
  */
-static jint android_util_EventLog_writeEvent_Long(JNIEnv* env, jobject clazz,
+static jint android_util_EventLog_writeEvent_Long(JNIEnv* env UNUSED,
+                                                  jobject clazz UNUSED,
                                                   jint tag, jlong value)
 {
     return android_btWriteLog(tag, EVENT_TYPE_LONG, &value, sizeof(value));
@@ -64,7 +68,8 @@ static jint android_util_EventLog_writeEvent_Long(JNIEnv* env, jobject clazz,
  * In class android.util.EventLog:
  *  static native int writeEvent(int tag, String value)
  */
-static jint android_util_EventLog_writeEvent_String(JNIEnv* env, jobject clazz,
+static jint android_util_EventLog_writeEvent_String(JNIEnv* env,
+                                                    jobject clazz UNUSED,
                                                     jint tag, jstring value) {
     uint8_t buf[MAX_EVENT_PAYLOAD];
 
@@ -144,7 +149,7 @@ static jint android_util_EventLog_writeEvent_Array(JNIEnv* env, jobject clazz,
  *
  *  Reads events from the event log
  */
-static void android_util_EventLog_readEvents(JNIEnv* env, jobject clazz,
+static void android_util_EventLog_readEvents(JNIEnv* env, jobject clazz UNUSED,
                                              jintArray tags,
                                              jobject out) {