diff --git a/app.py b/app.py
index bed76aa..9a7ccf7 100644
--- a/app.py
+++ b/app.py
@@ -9,7 +9,7 @@ def read_graph(graph_file: str = 'valos_halozat_formatted.txt') -> ig.Graph:
         edges = int(f.readline())
         result_graph: ig.Graph = ig.Graph(vertices)
         for _ in range(edges):
-            line = f.readline().split('')
+            line = f.readline().split(' ')
             result_graph.add_edge(int(line[0]), int(line[1]))
     return result_graph