diff --git a/src/libs/utils/textutils.cpp b/src/libs/utils/textutils.cpp
index 5c9846a24d6..34dbb5e1fa5 100644
--- a/src/libs/utils/textutils.cpp
+++ b/src/libs/utils/textutils.cpp
@@ -47,6 +47,15 @@ Position Position::fromFileName(QStringView fileName, int &postfixPos)
     return pos;
 }
 
+Position Position::fromPositionInDocument(const QTextDocument *document, int pos)
+{
+    const QTextBlock block = document->findBlock(pos);
+    if (block.isValid())
+        return {block.blockNumber() + 1, pos - block.position()};
+
+    return {};
+}
+
 int Range::length(const QString &text) const
 {
     if (begin.line == end.line)
@@ -87,15 +96,6 @@ bool convertPosition(const QTextDocument *document, int pos, int *line, int *col
     }
 }
 
-LineColumn convertPosition(const QTextDocument *document, int pos)
-{
-    const QTextBlock block = document->findBlock(pos);
-    if (block.isValid())
-        return {block.blockNumber() + 1, pos - block.position()};
-
-    return {};
-}
-
 int positionInText(const QTextDocument *textDocument, int line, int column)
 {
     // Deduct 1 from line and column since they are 1-based.
@@ -201,20 +201,6 @@ int utf8NthLineOffset(const QTextDocument *textDocument, const QByteArray &buffe
     return utf8Offset;
 }
 
-LineColumn utf16LineColumn(const QByteArray &utf8Buffer, int utf8Offset)
-{
-    LineColumn lineColumn;
-    lineColumn.line = static_cast<int>(
-                          std::count(utf8Buffer.begin(), utf8Buffer.begin() + utf8Offset, '\n'))
-                      + 1;
-    const int startOfLineOffset = utf8Offset ? (utf8Buffer.lastIndexOf('\n', utf8Offset - 1) + 1)
-                                             : 0;
-    lineColumn.column = QString::fromUtf8(
-                            utf8Buffer.mid(startOfLineOffset, utf8Offset - startOfLineOffset))
-                            .length();
-    return lineColumn;
-}
-
 QString utf16LineTextInUtf8Buffer(const QByteArray &utf8Buffer, int currentUtf8Offset)
 {
     const int lineStartUtf8Offset = currentUtf8Offset
diff --git a/src/libs/utils/textutils.h b/src/libs/utils/textutils.h
index e278cf919f5..14e83322a30 100644
--- a/src/libs/utils/textutils.h
+++ b/src/libs/utils/textutils.h
@@ -5,8 +5,6 @@
 
 #include "utils_global.h"
 
-#include "linecolumn.h"
-
 #include <QString>
 
 QT_BEGIN_NAMESPACE
@@ -29,7 +27,10 @@ public:
 
     bool operator!=(const Position &other) const { return !(operator==(other)); }
 
+    bool isValid() const { return line > 0 && column >= 0; }
+
     static Position fromFileName(QStringView fileName, int &postfixPos);
+    static Position fromPositionInDocument(const QTextDocument *document, int pos);
 };
 
 class QTCREATOR_UTILS_EXPORT Range
@@ -70,8 +71,6 @@ QTCREATOR_UTILS_EXPORT void applyReplacements(QTextDocument *doc, const Replacem
 QTCREATOR_UTILS_EXPORT bool convertPosition(const QTextDocument *document,
                                             int pos,
                                             int *line, int *column);
-QTCREATOR_UTILS_EXPORT
-LineColumn convertPosition(const QTextDocument *document, int pos);
 
 // line and column are 1-based
 QTCREATOR_UTILS_EXPORT int positionInText(const QTextDocument *textDocument, int line, int column);
@@ -90,7 +89,6 @@ QTCREATOR_UTILS_EXPORT int utf8NthLineOffset(const QTextDocument *textDocument,
                                              const QByteArray &buffer,
                                              int line);
 
-QTCREATOR_UTILS_EXPORT LineColumn utf16LineColumn(const QByteArray &utf8Buffer, int utf8Offset);
 QTCREATOR_UTILS_EXPORT QString utf16LineTextInUtf8Buffer(const QByteArray &utf8Buffer,
                                                          int currentUtf8Offset);
 
diff --git a/src/plugins/languageclient/languageclientsettings.cpp b/src/plugins/languageclient/languageclientsettings.cpp
index 92d314beabc..650b450a5d3 100644
--- a/src/plugins/languageclient/languageclientsettings.cpp
+++ b/src/plugins/languageclient/languageclientsettings.cpp
@@ -1030,6 +1030,7 @@ bool LanguageFilter::operator!=(const LanguageFilter &other) const
 TextEditor::BaseTextEditor *jsonEditor()
 {
     using namespace TextEditor;
+    using namespace Utils::Text;
     BaseTextEditor *editor = PlainTextEditorFactory::createPlainTextEditor();
     TextDocument *document = editor->textDocument();
     TextEditorWidget *widget = editor->editorWidget();
@@ -1052,12 +1053,11 @@ TextEditor::BaseTextEditor *jsonEditor()
         QJsonDocument::fromJson(content.toUtf8(), &error);
         if (error.error == QJsonParseError::NoError)
             return;
-        const Utils::LineColumn lineColumn
-            = Utils::Text::convertPosition(document->document(), error.offset);
-        if (!lineColumn.isValid())
+        const Position pos = Position::fromPositionInDocument(document->document(), error.offset);
+        if (!pos.isValid())
             return;
         auto mark = new TextMark(Utils::FilePath(),
-                                 lineColumn.line,
+                                 pos.line,
                                  {::LanguageClient::Tr::tr("JSON Error"), jsonMarkId});
         mark->setLineAnnotation(error.errorString());
         mark->setColor(Utils::Theme::CodeModel_Error_TextMarkColor);