--- a/dom/media/gmp/widevine-adapter/WidevineVideoFrame.cpp
+++ b/dom/media/gmp/widevine-adapter/WidevineVideoFrame.cpp
@@ -89,34 +89,34 @@ cdm::Buffer*
 WidevineVideoFrame::FrameBuffer()
 {
   return mBuffer;
 }
 
 void
 WidevineVideoFrame::SetPlaneOffset(cdm::VideoFrame::VideoPlane aPlane, uint32_t aOffset)
 {
-  GMP_LOG("WidevineVideoFrame::SetPlaneOffset(%d, %d) this=%p",
+  GMP_LOG("WidevineVideoFrame::SetPlaneOffset(%d, %" PRIu32 ") this=%p",
           aPlane,
           aOffset,
           this);
   mPlaneOffsets[aPlane] = aOffset;
 }
 
 uint32_t
 WidevineVideoFrame::PlaneOffset(cdm::VideoFrame::VideoPlane aPlane)
 {
   return mPlaneOffsets[aPlane];
 }
 
 void
 WidevineVideoFrame::SetStride(cdm::VideoFrame::VideoPlane aPlane, uint32_t aStride)
 {
   GMP_LOG(
-    "WidevineVideoFrame::SetStride(%d, %d) this=%p", aPlane, aStride, this);
+    "WidevineVideoFrame::SetStride(%d, %" PRIu32 ") this=%p", aPlane, aStride, this);
   mPlaneStrides[aPlane] = aStride;
 }
 
 uint32_t
 WidevineVideoFrame::Stride(cdm::VideoFrame::VideoPlane aPlane)
 {
   return mPlaneStrides[aPlane];
 }