diff --git a/scripts/create-combined-class1-dataset.py b/scripts/create-combined-class1-dataset.py
index ab60e5988413f6da041af02d9ccfb9f005dc1edf..c712cb24f6bce5e9c0bc002584d959f318486a54 100755
--- a/scripts/create-combined-class1-dataset.py
+++ b/scripts/create-combined-class1-dataset.py
@@ -68,7 +68,7 @@ if __name__ == "__main__":
     args = parser.parse_args()
 
     print("Reading %s..." % args.iedb_pickle_path)
-    with open(args.iedb_pickle_path, "r'") as f:
+    with open(args.iedb_pickle_path, "r") as f:
         iedb_datasets = pickle.load(f)
 
     print("Reading %s..." % args.netmhcpan_csv_path)