diff --git a/src/libs/utils/plaintextedit/plaintextedit.cpp b/src/libs/utils/plaintextedit/plaintextedit.cpp
index 833bf70226f..f5f9b6ba3f2 100644
--- a/src/libs/utils/plaintextedit/plaintextedit.cpp
+++ b/src/libs/utils/plaintextedit/plaintextedit.cpp
@@ -2973,6 +2973,11 @@ bool PlainTextEdit::find(const QRegularExpression &exp, QTextDocument::FindFlags
 }
 #endif
 
+void PlainTextEdit::setTopBlock(const QTextBlock &block)
+{
+    d->setTopBlock(block.firstLineNumber(), 0, 0);
+}
+
 /*!
     \fn void PlainTextEdit::copyAvailable(bool yes)
 
diff --git a/src/libs/utils/plaintextedit/plaintextedit.h b/src/libs/utils/plaintextedit/plaintextedit.h
index d822ae64462..da4ed0050f2 100644
--- a/src/libs/utils/plaintextedit/plaintextedit.h
+++ b/src/libs/utils/plaintextedit/plaintextedit.h
@@ -111,6 +111,7 @@ public:
     inline QString toPlainText() const
     { return document()->toPlainText(); }
 
+    void setTopBlock(const QTextBlock &block);
     void ensureCursorVisible();
 
     virtual QVariant loadResource(int type, const QUrl &name);
diff --git a/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp b/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp
index a340af435f8..ffc512c5e78 100644
--- a/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp
+++ b/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp
@@ -834,7 +834,7 @@ void SideBySideDiffEditorWidget::setCurrentDiffFileIndex(int diffFileIndex)
         QTextCursor cursor = editor->textCursor();
         cursor.setPosition(block.position());
         editor->setTextCursor(cursor);
-        editor->verticalScrollBar()->setValue(blockNumber);
+        editor->setTopBlock(block);
     }
 }
 
diff --git a/src/plugins/diffeditor/unifieddiffeditorwidget.cpp b/src/plugins/diffeditor/unifieddiffeditorwidget.cpp
index f0591e7519f..7e1148cd59f 100644
--- a/src/plugins/diffeditor/unifieddiffeditorwidget.cpp
+++ b/src/plugins/diffeditor/unifieddiffeditorwidget.cpp
@@ -578,7 +578,7 @@ void UnifiedDiffEditorWidget::setCurrentDiffFileIndex(int diffFileIndex)
     QTextCursor cursor = textCursor();
     cursor.setPosition(block.position());
     setTextCursor(cursor);
-    verticalScrollBar()->setValue(blockNumber);
+    setTopBlock(block);
 }
 
 } // namespace DiffEditor::Internal