diff --git a/main.py b/main.py
index e1b98cd..e819a67 100644
--- a/main.py
+++ b/main.py
@@ -81,13 +81,15 @@ def main(args):
     
     min_fitnesses, avg_fitnesses, best_fitnesses = [], [], []
     
+    config_instance = Config(cores=args.cores)
+    
     neat = load_neat(neat_name)
     if neat is not None: # TODO: Add option to insert new config into NEAT object.
         generation_nums, best_fitnesses, avg_fitnesses, min_fitnesses = read_fitness_file(neat_name)
         from_generation = generation_nums[-1] + 1 if generation_nums else 0
         neat.config = config_instance
     else:
-        neat = NEAT(Config())
+        neat = NEAT(config_instance)
         neat.initiate_genomes()
         from_generation = 0
 
@@ -155,6 +157,7 @@ def command_line_interface():
     # Train command (runs main())
     train_parser = subparsers.add_parser('train', help="Run the training process")
     train_parser.add_argument('-g', '--n_generations', type=int, default=-1, help="The number of generations to train for")
+    train_parser.add_argument('-c', '--cores', type=int, default=-1, help="Number of cores that is used in training. Defaults to the max amount of cores available.")
 
     graph_parser = subparsers.add_parser('graph', help="Graph the fitness data")
     
@@ -183,4 +186,4 @@ def command_line_interface():
         parser.print_help()
         
 if __name__ == "__main__":
-    command_line_interface()
+    command_line_interface()
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