diff --git a/taglib/mpeg/id3v2/frames/chapterframe.cpp b/taglib/mpeg/id3v2/frames/chapterframe.cpp
index 667abc53..f96fad30 100644
--- a/taglib/mpeg/id3v2/frames/chapterframe.cpp
+++ b/taglib/mpeg/id3v2/frames/chapterframe.cpp
@@ -221,13 +221,13 @@ void ChapterFrame::parseFields(const ByteVector &data)
   int pos = 0, embPos = 0;
   d->elementID = readStringField(data, String::Latin1, &pos).data(String::Latin1);
   d->elementID.append(char(0));
-  d->startTime = data.mid(pos, 4).toUInt(true);
+  d->startTime = data.toUInt(pos, true);
   pos += 4;
-  d->endTime = data.mid(pos, 4).toUInt(true);
+  d->endTime = data.toUInt(pos, true);
   pos += 4;
-  d->startOffset = data.mid(pos, 4).toUInt(true);
+  d->startOffset = data.toUInt(pos, true);
   pos += 4;
-  d->endOffset = data.mid(pos, 4).toUInt(true);
+  d->endOffset = data.toUInt(pos, true);
   pos += 4;
   size -= pos;
 
diff --git a/taglib/mpeg/id3v2/frames/synchronizedlyricsframe.cpp b/taglib/mpeg/id3v2/frames/synchronizedlyricsframe.cpp
index 878af9bd..86c11f7a 100644
--- a/taglib/mpeg/id3v2/frames/synchronizedlyricsframe.cpp
+++ b/taglib/mpeg/id3v2/frames/synchronizedlyricsframe.cpp
@@ -193,7 +193,7 @@ void SynchronizedLyricsFrame::parseFields(const ByteVector &data)
     if(text.isNull() || pos + 4 > end)
       return;
 
-    uint time = data.mid(pos, 4).toUInt(true);
+    uint time = data.toUInt(pos, true);
     pos += 4;
 
     d->synchedText.append(SynchedText(time, text));