diff --git a/src/genetic_algorithm.py b/src/genetic_algorithm.py
index c163779..5221cf0 100644
--- a/src/genetic_algorithm.py
+++ b/src/genetic_algorithm.py
@@ -82,12 +82,13 @@ def get_matching_genes(parents):
 
 
 def populate_offspring(values):
-    offspring = DataFrame(columns=["point", "distance"])
+    offspring = DataFrame(columns=["point", "distance", "fitness"])
     for element in values:
-        aux = DataFrame(columns=["point", "distance"])
+        aux = DataFrame(columns=["point", "distance", "fitness"])
         aux["point"] = element
         offspring = offspring.append(aux)
     offspring["distance"] = 0
+    offspring["fitness"] = 0
     offspring = offspring[1:]
     return offspring