diff --git a/src/main.cpp b/src/main.cpp
index 1739d77..d1b3bd0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,6 @@
 #include <iostream>
 
-std::string get_greeting() {
+const std::string& get_greeting() {
     return "Hello, world!";
 }