diff --git a/src/main.cpp b/src/main.cpp
index b892019..c9240ec 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -42,8 +42,8 @@ int main(int argc, char* argv[]) {
     if (!files.empty()) {
         vector<future<pair<string, optional<Yerbacon::Exception>>>> Units;
         const launch& Policy = not parallel ? launch::deferred : launch::async;
-        for_each(files.begin(), files.end(), [&Units, &Policy, &compile](const string_view& fileName){
-            Units.push_back(async(Policy, [&fileName, &compile]() {
+        transform(files.begin(), files.end(), back_inserter(Units), [&Policy, &compile](const string_view& fileName){
+            return async(Policy, [&fileName, &compile]() {
                 pair<string, optional<Yerbacon::Exception>> resultingPair;
                 try {
                     resultingPair.first = compile(fileName);
@@ -64,7 +64,7 @@ int main(int argc, char* argv[]) {
                     resultingPair.second.emplace(error);
                 }
                 return resultingPair;
-            }));
+            });
         });
         if (printResult) cout << "~~~~[Yerbacon compilation result]~~~~\n\n";
         for_each(Units.begin(), Units.end(), [&printResult](future<pair<string, optional<Yerbacon::Exception>>>& currentFuture) {