diff --git a/src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp b/src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp
index 20c85133216..aaad00ed4bd 100644
--- a/src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp
@@ -872,13 +872,22 @@ void CMakeBuildSystem::checkAndReportError(QString &errorMessage)
     }
 }
 
+static QSet<FilePath> projectFilesToWatch(const QSet<CMakeFileInfo> &cmakeFiles)
+{
+    return Utils::transform(Utils::filtered(cmakeFiles,
+                                            [](const CMakeFileInfo &info) {
+                                                return !info.isGenerated;
+                                            }),
+                            [](const CMakeFileInfo &info) { return info.path; });
+}
+
 void CMakeBuildSystem::updateProjectData()
 {
     qCDebug(cmakeBuildSystemLog) << "Updating CMake project data";
 
     QTC_ASSERT(m_treeScanner.isFinished() && !m_reader.isParsing(), return );
 
-    buildConfiguration()->project()->setExtraProjectFiles(m_reader.projectFilesToWatch());
+    buildConfiguration()->project()->setExtraProjectFiles(projectFilesToWatch(m_cmakeFiles));
 
     CMakeConfig patchedConfig = configurationFromCMake();
     {
diff --git a/src/plugins/cmakeprojectmanager/fileapireader.cpp b/src/plugins/cmakeprojectmanager/fileapireader.cpp
index 0ed163021cf..fd507f7bf71 100644
--- a/src/plugins/cmakeprojectmanager/fileapireader.cpp
+++ b/src/plugins/cmakeprojectmanager/fileapireader.cpp
@@ -165,14 +165,6 @@ bool FileApiReader::isParsing() const
     return m_isParsing;
 }
 
-QSet<FilePath> FileApiReader::projectFilesToWatch() const
-{
-    return Utils::transform(
-                Utils::filtered(m_cmakeFiles,
-                                [](const CMakeFileInfo &info) { return !info.isGenerated; }),
-                [](const CMakeFileInfo &info) { return info.path;});
-}
-
 QList<CMakeBuildTarget> FileApiReader::takeBuildTargets(QString &errorMessage){
     Q_UNUSED(errorMessage)
 
diff --git a/src/plugins/cmakeprojectmanager/fileapireader.h b/src/plugins/cmakeprojectmanager/fileapireader.h
index cb90af8477d..115d22ea71a 100644
--- a/src/plugins/cmakeprojectmanager/fileapireader.h
+++ b/src/plugins/cmakeprojectmanager/fileapireader.h
@@ -44,7 +44,6 @@ public:
 
     bool isParsing() const;
 
-    QSet<Utils::FilePath> projectFilesToWatch() const;
     QList<CMakeBuildTarget> takeBuildTargets(QString &errorMessage);
     QSet<CMakeFileInfo> takeCMakeFileInfos(QString &errorMessage);
     CMakeConfig takeParsedConfiguration(QString &errorMessage);