diff --git a/mediapipe/util/annotation_renderer.cc b/mediapipe/util/annotation_renderer.cc
index 671f4750..5188da89 100644
--- a/mediapipe/util/annotation_renderer.cc
+++ b/mediapipe/util/annotation_renderer.cc
@@ -56,8 +56,8 @@ bool NormalizedtoPixelCoordinates(double normalized_x, double normalized_y,
     VLOG(1) << "Normalized coordinates must be between 0.0 and 1.0";
   }
 
-  *x_px = static_cast<int32>(round(normalized_x * image_width));
-  *y_px = static_cast<int32>(round(normalized_y * image_height));
+  *x_px = static_cast<int32_t>(round(normalized_x * image_width));
+  *y_px = static_cast<int32_t>(round(normalized_y * image_height));
 
   return true;
 }
diff --git a/mediapipe/util/image_test_utils.cc b/mediapipe/util/image_test_utils.cc
index 81566698..77b75595 100644
--- a/mediapipe/util/image_test_utils.cc
+++ b/mediapipe/util/image_test_utils.cc
@@ -43,14 +43,14 @@ mediapipe::ImageFormat::Format GetImageFormat(int image_channels) {
 
 Packet MakeImageFramePacket(cv::Mat input, int timestamp) {
   ImageFrame input_image(GetImageFormat(input.channels()), input.cols,
-                         input.rows, input.step, input.data, [](uint8*) {});
+                         input.rows, input.step, input.data, [](uint8_t*) {});
   return MakePacket<ImageFrame>(std::move(input_image)).At(Timestamp(0));
 }
 
 Packet MakeImagePacket(cv::Mat input, int timestamp) {
   mediapipe::Image input_image(std::make_shared<mediapipe::ImageFrame>(
       GetImageFormat(input.channels()), input.cols, input.rows, input.step,
-      input.data, [](uint8*) {}));
+      input.data, [](uint8_t*) {}));
   return MakePacket<mediapipe::Image>(std::move(input_image)).At(Timestamp(0));
 }