diff --git a/services/impl/screen_capture/mediasource/audio_source_capturer.cpp b/services/impl/screen_capture/mediasource/audio_source_capturer.cpp
index dc35bd8d7d17591ed94e51b28150dda736270732..1a1a257153562a94ddadf2e0894ce169e98c52c2 100644
--- a/services/impl/screen_capture/mediasource/audio_source_capturer.cpp
+++ b/services/impl/screen_capture/mediasource/audio_source_capturer.cpp
@@ -116,7 +116,7 @@ void AudioSourceCapturer::AudioCaptureThreadWorker()
     auto pcmFrame = FrameImpl::Create();
     pcmFrame->codecId_ = CODEC_PCM;
 
-    SHARING_LOGI("audio capture buffer size: %{public}d.", audioBufferLen_);
+    SHARING_LOGI("audio capture buffer size: %{public}zu.", audioBufferLen_);
     uint8_t *frame = (uint8_t *)malloc(audioBufferLen_);
     if (!frame) {
         SHARING_LOGE("malloc buffer failed.");