diff --git a/README.md b/README.md
index f0ab232..f430ab2 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@ Fast and lightweight, UDPX is a single-packet UDP scanner written in Go that sup
 * You don't need to instal libpcap or any other dependencies.
 * Can run on Linux, Mac Os, Windows. Or your Nethunter if you built it for Arm.
 * Customizable. You can add your probes and test for even more protocols.
+* Stores results in JSONL format.
+* Scans also domain names.
 
 ## How it works
 Scanning UDP ports is very different than scanning TCP - you may, or may not get any result back from probing an UDP port as UDP is a connectionless protocol. UDPX implements a single-packet based approach. A protocol-specific packet is sent to the defined service (port) and waits for a response. The limit is set to 500 ms by default and can be changed by `-w` flag. If the service sends a packet back within this time, it is certain that it is indeed listening on that port and is reported as open.
@@ -41,6 +43,12 @@ Target can be:
 
 IPv6 is supported.
 
+If you want to store the results, use flag `-o [filename]`. Output is in JSONL format, as can be seen bellow:
+
+```jsonl
+{"address":"45.33.32.156","hostname":"scanme.nmap.org","port":123,"service":"ntp","response_data":"JAME6QAAAEoAAA56LU9vp+d2ZPwOYIyDxU8jS3GxUvM="}
+```
+
 ## Options
 ```
 
@@ -154,9 +162,9 @@ Please send a feature request with protocol name and port and I will make it hap
 
 ```go
 {
-    Name: "ike",
-    Data: "5b5e64c03e99b51100000000000000000110020000000000000001500000013400000001000000010000012801010008030000240101",
-    Port: 500,
+        Name: "ike",
+        Payloads: []string{"5b5e64c03e99b51100000000000000000110020000000000000001500000013400000001000000010000012801010008030000240101"},
+        Port: []int{500, 4500},
 },
 ```
 
diff --git a/cmd/udpx/main.go b/cmd/udpx/main.go
index 16141e9..b471722 100644
--- a/cmd/udpx/main.go
+++ b/cmd/udpx/main.go
@@ -113,12 +113,12 @@ func main() {
 	if len(opts.Arg_o) != 0 {
 		f, err := os.Create(opts.Arg_o)
 
-		defer f.Close()
-
 		if err != nil {
 			log.Fatalf("%s[!]%s Error creating output file: %s", colors.SetColor().Red, colors.SetColor().Reset, err)
 		}
 
+		defer f.Close()
+
 		log.Printf("[+] Results will be written to: %s", opts.Arg_o)
 	}
 
@@ -142,11 +142,10 @@ func main() {
 				log.Fatalf("%s[!]%s Error opening output file: %s", colors.SetColor().Red, colors.SetColor().Reset, err)
 			}
 
-			defer f.Close()
-
 			if _, err = f.WriteString(string(json) + "\n"); err != nil {
 				log.Fatalf("%s[!]%s Error writing output file: %s", colors.SetColor().Red, colors.SetColor().Reset, err)
 			}
+
 		}
 	}