diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index d0df710..b85e89a 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -186,7 +186,7 @@
                                     audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
                                     callback_t cbf       = NULL,
                                     void* user           = NULL,
-                                    int notificationFrames = 0,
+                                    uint32_t notificationFrames = 0,
                                     int sessionId        = AUDIO_SESSION_ALLOCATE,
                                     transfer_type transferType = TRANSFER_DEFAULT,
                                     const audio_offload_info_t *offloadInfo = NULL,
@@ -212,7 +212,7 @@
                                     audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
                                     callback_t cbf      = NULL,
                                     void* user          = NULL,
-                                    int notificationFrames = 0,
+                                    uint32_t notificationFrames = 0,
                                     int sessionId       = AUDIO_SESSION_ALLOCATE,
                                     transfer_type transferType = TRANSFER_DEFAULT,
                                     const audio_offload_info_t *offloadInfo = NULL,
@@ -249,7 +249,7 @@
                             audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
                             callback_t cbf      = NULL,
                             void* user          = NULL,
-                            int notificationFrames = 0,
+                            uint32_t notificationFrames = 0,
                             const sp<IMemory>& sharedBuffer = 0,
                             bool threadCanCallJava = false,
                             int sessionId       = AUDIO_SESSION_ALLOCATE,