diff --git a/src/tools/clangbackend/ipcsource/clangdocument.cpp b/src/tools/clangbackend/ipcsource/clangdocument.cpp
index 344787bbac1..fcb4d4e4100 100644
--- a/src/tools/clangbackend/ipcsource/clangdocument.cpp
+++ b/src/tools/clangbackend/ipcsource/clangdocument.cpp
@@ -107,7 +107,7 @@ Document::Document(const Utf8String &filePath,
                                        fileArguments,
                                        documents))
 {
-    if (fileExistsCheck == CheckIfFileExists)
+    if (fileExistsCheck == FileExistsCheck::Check)
         checkIfFileExists();
 }
 
diff --git a/src/tools/clangbackend/ipcsource/clangdocument.h b/src/tools/clangbackend/ipcsource/clangdocument.h
index ab6322eff1c..596c0fd7ebf 100644
--- a/src/tools/clangbackend/ipcsource/clangdocument.h
+++ b/src/tools/clangbackend/ipcsource/clangdocument.h
@@ -54,9 +54,9 @@ class Documents;
 class Document
 {
 public:
-    enum FileExistsCheck {
-        CheckIfFileExists,
-        DoNotCheckIfFileExists
+    enum class FileExistsCheck {
+        Check,
+        DoNotCheck
     };
 
     Document() = default;
@@ -64,7 +64,7 @@ public:
              const ProjectPart &projectPart,
              const Utf8StringVector &fileArguments,
              Documents &documents,
-             FileExistsCheck fileExistsCheck = CheckIfFileExists);
+             FileExistsCheck fileExistsCheck = FileExistsCheck::Check);
     ~Document();
 
     Document(const Document &cxTranslationUnit);
diff --git a/src/tools/clangbackend/ipcsource/clangdocuments.cpp b/src/tools/clangbackend/ipcsource/clangdocuments.cpp
index 6888597a826..d8c0a6a324c 100644
--- a/src/tools/clangbackend/ipcsource/clangdocuments.cpp
+++ b/src/tools/clangbackend/ipcsource/clangdocuments.cpp
@@ -218,7 +218,9 @@ const ClangFileSystemWatcher *Documents::clangFileSystemWatcher() const
 
 Document Documents::createDocument(const FileContainer &fileContainer)
 {
-    Document::FileExistsCheck checkIfFileExists = fileContainer.hasUnsavedFileContent() ? Document::DoNotCheckIfFileExists : Document::CheckIfFileExists;
+    const Document::FileExistsCheck checkIfFileExists = fileContainer.hasUnsavedFileContent()
+            ? Document::FileExistsCheck::DoNotCheck
+            : Document::FileExistsCheck::Check;
 
     documents_.emplace_back(fileContainer.filePath(),
                                    projectParts.project(fileContainer.projectPartId()),
diff --git a/tests/unit/unittest/clangdocument-test.cpp b/tests/unit/unittest/clangdocument-test.cpp
index 4dec96a86bd..1d7d810ea07 100644
--- a/tests/unit/unittest/clangdocument-test.cpp
+++ b/tests/unit/unittest/clangdocument-test.cpp
@@ -108,13 +108,15 @@ TEST_F(Document, DefaultDocumentIsNotIntact)
 
 TEST_F(Document, ThrowExceptionForNonExistingFilePath)
 {
-    ASSERT_THROW(::Document(Utf8StringLiteral("file.cpp"), projectPart, Utf8StringVector(), documents),
+    ASSERT_THROW(::Document(Utf8StringLiteral("file.cpp"), projectPart, Utf8StringVector(),
+                            documents),
                  ClangBackEnd::DocumentFileDoesNotExistException);
 }
 
 TEST_F(Document, ThrowNoExceptionForNonExistingFilePathIfDoNotCheckIfFileExistsIsSet)
 {
-    ASSERT_NO_THROW(::Document(Utf8StringLiteral("file.cpp"), projectPart, Utf8StringVector(), documents, ::Document::DoNotCheckIfFileExists));
+    ASSERT_NO_THROW(::Document(Utf8StringLiteral("file.cpp"), projectPart, Utf8StringVector(),
+                               documents, ::Document::FileExistsCheck::DoNotCheck));
 }
 
 TEST_F(Document, DocumentIsValid)