diff --git a/src/structure/population.py b/src/structure/population.py
index ca1db32..13f57b1 100644
--- a/src/structure/population.py
+++ b/src/structure/population.py
@@ -180,7 +180,7 @@ class Population:
         which can be evaluated directly as code to create
         the population.
         """
-        return "EasyGA.make_population({repr(self.chromosome_list)})"
+        return f"EasyGA.make_population({repr(self.chromosome_list)})"
 
 
     def __str__(self):