diff --git a/src/plugins/texteditor/highlighter.cpp b/src/plugins/texteditor/highlighter.cpp
index 170ec12bc8b..2471fd17a14 100644
--- a/src/plugins/texteditor/highlighter.cpp
+++ b/src/plugins/texteditor/highlighter.cpp
@@ -32,6 +32,7 @@
 
 #include <coreplugin/icore.h>
 #include <coreplugin/messagemanager.h>
+#include <utils/mimetypes/mimedatabase.h>
 
 #include <Format>
 #include <Repository>
@@ -99,6 +100,17 @@ Highlighter::Highlighter()
                             &categoryForTextStyle);
 }
 
+KSyntaxHighlighting::Definition Highlighter::definitionForDocument(const TextDocument *document)
+{
+    const Utils::MimeType mimeType = Utils::mimeTypeForName(document->mimeType());
+    KSyntaxHighlighting::Definition definition;
+    if (mimeType.isValid())
+        definition = Highlighter::definitionForMimeType(mimeType.name());
+    if (!definition.isValid())
+        definition = Highlighter::definitionForFileName(document->filePath().fileName());
+    return definition;
+}
+
 KSyntaxHighlighting::Definition Highlighter::definitionForMimeType(const QString &mimeType)
 {
     return highlightRepository()->definitionForMimeType(mimeType);
diff --git a/src/plugins/texteditor/highlighter.h b/src/plugins/texteditor/highlighter.h
index 90ab31332ac..f29da279e31 100644
--- a/src/plugins/texteditor/highlighter.h
+++ b/src/plugins/texteditor/highlighter.h
@@ -34,12 +34,14 @@
 
 namespace TextEditor {
 class FontSettings;
+class TextDocument;
 
 class Highlighter : public SyntaxHighlighter, public KSyntaxHighlighting::AbstractHighlighter
 {
 public:
     Highlighter();
 
+    static KSyntaxHighlighting::Definition definitionForDocument(const TextDocument *document);
     static KSyntaxHighlighting::Definition definitionForMimeType(const QString &mimeType);
     static KSyntaxHighlighting::Definition definitionForFileName(const QString &fileName);
 
diff --git a/src/plugins/texteditor/texteditor.cpp b/src/plugins/texteditor/texteditor.cpp
index 7a301e38998..8e5aaacbad3 100644
--- a/src/plugins/texteditor/texteditor.cpp
+++ b/src/plugins/texteditor/texteditor.cpp
@@ -8499,14 +8499,8 @@ void TextEditorWidget::configureGenericHighlighter()
 
     setCodeFoldingSupported(false);
 
-    const QString type = textDocument()->mimeType();
-    const MimeType mimeType = Utils::mimeTypeForName(type);
-    const QString fileName = textDocument()->filePath().fileName();
-    KSyntaxHighlighting::Definition definition;
-    if (mimeType.isValid())
-        definition = Highlighter::definitionForMimeType(mimeType.name());
-    if (!definition.isValid())
-        definition = Highlighter::definitionForFileName(fileName);
+    const KSyntaxHighlighting::Definition definition =
+        Highlighter::definitionForDocument(textDocument());
 
     if (definition.isValid()) {
         highlighter->setDefinition(definition);
@@ -8518,7 +8512,8 @@ void TextEditorWidget::configureGenericHighlighter()
     }
 
     d->updateSyntaxInfoBar(!definition.isValid()
-            && !TextEditorSettings::highlighterSettings().isIgnoredFilePattern(fileName));
+            && !TextEditorSettings::highlighterSettings().isIgnoredFilePattern(
+                                  textDocument()->filePath().fileName()));
 
     textDocument()->setFontSettings(TextEditorSettings::fontSettings());
 }