diff --git a/common/hal/google_camera_hal/realtime_zsl_result_request_processor.cc b/common/hal/google_camera_hal/realtime_zsl_result_request_processor.cc
index 8edc17d..cfb0846 100644
--- a/common/hal/google_camera_hal/realtime_zsl_result_request_processor.cc
+++ b/common/hal/google_camera_hal/realtime_zsl_result_request_processor.cc
@@ -106,8 +106,8 @@ void RealtimeZslResultRequestProcessor::ProcessResult(
       "%s: Received result at frame: %d, has metadata (%s), output buffer "
       "counts: %lu, input buffer counts: %lu",
       __FUNCTION__, result->frame_number,
-      (result->result_metadata ? "yes" : "no"), result->output_buffers.size(),
-      result->input_buffers.size());
+      (result->result_metadata ? "yes" : "no"), (unsigned long) result->output_buffers.size(),
+      (unsigned long) result->input_buffers.size());
 
   // Pending request should always exist
   RequestEntry& pending_request =
@@ -348,8 +348,8 @@ void RealtimeZslResultRequestProcessor::Notify(
         "%s: Received shutter message for frame %d, timestamp_ns: %lu, "
         "readout_timestamp_ns: %lu",
         __FUNCTION__, message.message.shutter.frame_number,
-        message.message.shutter.timestamp_ns,
-        message.message.shutter.readout_timestamp_ns);
+        (unsigned long) message.message.shutter.timestamp_ns,
+        (unsigned long) message.message.shutter.readout_timestamp_ns);
   }
   notify_(message);
 }