diff --git a/data_structures/solutions/data_structures_ex04.py b/data_structures/solutions/data_structures_ex04.py
index 6bfb553..73342a0 100755
--- a/data_structures/solutions/data_structures_ex04.py
+++ b/data_structures/solutions/data_structures_ex04.py
@@ -26,7 +26,7 @@
 """
 
 import sys
-file = open("DATA", "r")
+file = open("dataset", "r")
 
 lines = file.readlines()
 file.close()