diff --git a/nmap_xml_parser.py b/nmap_xml_parser.py
index 0332ce5..49650b4 100644
--- a/nmap_xml_parser.py
+++ b/nmap_xml_parser.py
@@ -219,7 +219,12 @@ def print_filtered_port(data, filtered_port):
     filtered_port. If it matches, print the IP address
     """
     for item in data:
-        port = item[4]
+        try:
+            port = item[4]
+        except IndexError as e:
+            if args.debug:
+                print(e)
+            continue
         if port == filtered_port:
             print(item[0])
 
@@ -277,4 +282,4 @@ if __name__ == '__main__':
         exit()
         
     csv_name = args.csv
-    main()
+    main()
\ No newline at end of file