diff --git a/src/headers/arguments.hpp b/src/headers/arguments.hpp
index 0cef115..2927d8f 100644
--- a/src/headers/arguments.hpp
+++ b/src/headers/arguments.hpp
@@ -25,9 +25,9 @@ public:
 class ArgumentAssignable: public Argument {
     vector<string_view> values;
 public:
-    static string getValueFor(const string& str) {
+    static string_view getValueFor(const string_view& str) {
         unsigned long definePos = str.find_last_of('=') + 1;
-        return str.size() > definePos ? str.substr(definePos) : string();
+        return str.size() > definePos ? str.substr(definePos) : string_view();
     }
     ArgumentAssignable(string name, const span<string_view>& possibleValues): Argument(move(name)), values() {
         values.reserve(possibleValues.size());
diff --git a/src/main.cpp b/src/main.cpp
index 92d9d98..7674bff 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -22,7 +22,7 @@ int main(int argc, char* argv[]) {
         if ((argc == 2) && (currentArg == Argument("version"))) { cout << Yerbacon::getVersion() << endl; exit(EXIT_SUCCESS); }
         else if (currentArg == ArgumentShort("printresult")) printResult = true;
         else if (currentArg == ArgumentAssignable("target")) {
-            const string value = ArgumentAssignable::getValueFor(currentArg.data());
+            const string_view value = ArgumentAssignable::getValueFor(currentArg);
             if (!value.empty()) (target = '.') += value;
         }
         else if (currentArg == Argument("parallel")) parallel = true;