--- a/widget/cocoa/TextInputHandler.mm
+++ b/widget/cocoa/TextInputHandler.mm
@@ -3279,17 +3279,17 @@ IMEInputHandler::GetAttributedSubstringF
     startOffset -= mIMECompositionStart;
   }
   textContent.InitForQueryTextContent(startOffset, aRange.length, options);
   textContent.RequestFontRanges();
   DispatchEvent(textContent);
 
   MOZ_LOG(gLog, LogLevel::Info,
     ("%p IMEInputHandler::GetAttributedSubstringFromRange, "
-     "textContent={ mSucceeded=%s, mReply={ mString=\"%s\", mOffset=%llu } }",
+     "textContent={ mSucceeded=%s, mReply={ mString=\"%s\", mOffset=%u } }",
      this, TrueOrFalse(textContent.mSucceeded),
      NS_ConvertUTF16toUTF8(textContent.mReply.mString).get(),
      textContent.mReply.mOffset));
 
   if (!textContent.mSucceeded) {
     return nil;
   }
 
@@ -3356,17 +3356,17 @@ IMEInputHandler::SelectedRange()
 
   RefPtr<IMEInputHandler> kungFuDeathGrip(this);
 
   WidgetQueryContentEvent selection(true, eQuerySelectedText, mWidget);
   DispatchEvent(selection);
 
   MOZ_LOG(gLog, LogLevel::Info,
     ("%p IMEInputHandler::SelectedRange, selection={ mSucceeded=%s, "
-     "mReply={ mOffset=%llu, mString.Length()=%llu } }",
+     "mReply={ mOffset=%u, mString.Length()=%u } }",
      this, TrueOrFalse(selection.mSucceeded), selection.mReply.mOffset,
      selection.mReply.mString.Length()));
 
   if (!selection.mSucceeded) {
     return mSelectedRange;
   }
 
   mWritingMode = selection.GetWritingMode();