diff --git a/server/src/Server.cpp b/server/src/Server.cpp
index 2f3706a58..fd5721d18 100644
--- a/server/src/Server.cpp
+++ b/server/src/Server.cpp
@@ -257,7 +257,7 @@ Status Server::TestsGenServiceImpl::ProcessBaseTestRequest(BaseTestGen &testGen,
         auto generator = std::make_shared<KleeGenerator>(&testGen, typesHandler, pathSubstitution);
 
         ReturnTypesFetcher returnTypesFetcher{&testGen};
-        returnTypesFetcher.fetch(testGen.progressWriter, synchronizer.getSourceFiles());
+        returnTypesFetcher.fetch(testGen.progressWriter, synchronizer.getTargetSourceFiles());
         LOG_S(DEBUG) << "Temporary build directory path: " << testGen.serverBuildDir;
         generator->buildKleeFiles(testGen.tests, lineInfo);
         generator->handleFailedFunctions(testGen.tests);
diff --git a/server/src/Synchronizer.cpp b/server/src/Synchronizer.cpp
index 7bfc6f863..16da36497 100644
--- a/server/src/Synchronizer.cpp
+++ b/server/src/Synchronizer.cpp
@@ -65,7 +65,7 @@ bool Synchronizer::isProbablyOutdated(const fs::path &srcFilePath) const {
 }
 
 CollectionUtils::FileSet Synchronizer::getOutdatedSourcePaths() const {
-    return CollectionUtils::filterOut(getSourceFiles(), [this](fs::path const &sourcePath) {
+    return CollectionUtils::filterOut(getTargetSourceFiles(), [this](fs::path const &sourcePath) {
         return !isProbablyOutdated(sourcePath);
     });
 }
@@ -161,6 +161,7 @@ void Synchronizer::synchronizeStubs(StubSet &outdatedStubs,
 
     fs::path ccJsonStubDirPath =
             Paths::getUTBotBuildDir(testGen->projectContext) / "stubs_build_files";
+    // todo: is it needed?
     auto stubsCdb = createStubsCompilationDatabase(stubFiles, ccJsonStubDirPath);
 
     auto sourceToHeaderRewriter =
@@ -197,7 +198,7 @@ Synchronizer::createStubsCompilationDatabase(StubSet &stubFiles,
 
 void Synchronizer::synchronizeWrappers(const CollectionUtils::FileSet &outdatedSourcePaths) const {
     auto sourceFilesNeedToRegenerateWrappers = outdatedSourcePaths;
-    for (fs::path const &sourceFilePath : getSourceFiles()) {
+    for (fs::path const &sourceFilePath : getTargetSourceFiles()) {
         if (!CollectionUtils::contains(sourceFilesNeedToRegenerateWrappers, sourceFilePath)) {
             auto wrapperFilePath =
                 Paths::getWrapperFilePath(testGen->projectContext, sourceFilePath);
@@ -217,10 +218,14 @@ void Synchronizer::synchronizeWrappers(const CollectionUtils::FileSet &outdatedS
         });
 }
 
-const CollectionUtils::FileSet &Synchronizer::getSourceFiles() const {
+const CollectionUtils::FileSet &Synchronizer::getTargetSourceFiles() const {
     return testGen->getTargetBuildDatabase()->compilationDatabase->getAllFiles();
 }
 
+const CollectionUtils::FileSet &Synchronizer::getProjectSourceFiles() const {
+    return testGen->getProjectBuildDatabase()->compilationDatabase->getAllFiles();
+}
+
 StubSet Synchronizer::getStubsFiles() const {
     return getStubSetFromSources(testGen->getProjectBuildDatabase()->compilationDatabase->getAllFiles());
 }
@@ -233,7 +238,7 @@ void Synchronizer::prepareDirectory(const fs::path &stubDirectory) {
             if (!Paths::isHeaderFile(stubPath)) {
                 fs::path sourcePath =
                     Paths::stubPathToSourcePath(testGen->projectContext, stubPath);
-                if (!CollectionUtils::contains(getSourceFiles(), sourcePath)) {
+                if (!CollectionUtils::contains(getProjectSourceFiles(), sourcePath)) {
                     LOG_S(DEBUG) << "Found extra file in stub directory: " << stubPath
                                  << ". Removing it.";
                     fs::remove(stubPath);
diff --git a/server/src/Synchronizer.h b/server/src/Synchronizer.h
index 4a8c1ccf8..62d70661a 100644
--- a/server/src/Synchronizer.h
+++ b/server/src/Synchronizer.h
@@ -56,7 +56,8 @@ class Synchronizer {
 
     void synchronize(const types::TypesHandler &typesHandler);
 
-    [[nodiscard]] const CollectionUtils::FileSet &getSourceFiles() const;
+    [[nodiscard]] const CollectionUtils::FileSet &getTargetSourceFiles() const;
+    [[nodiscard]] const CollectionUtils::FileSet &getProjectSourceFiles() const;
     [[nodiscard]] std::unordered_set<StubOperator, HashUtils::StubHash> getStubsFiles() const;
 };