diff --git a/recv_file b/recv_file
index 6635372..f78afdc 100644
--- a/recv_file
+++ b/recv_file
@@ -1,18 +1,23 @@
-dofile("utils")
+dofile("/git-scripts/utils")
 modemSide = utils.getSideOf("modem") --get side the modem is on
 
 rednet.open(modemSide)
 
 --get message, no timeout
 id, msg, dist = rednet.receive()
+print("Data received!")
 
-print("Received data:")
+--get filename
 term.write("Output filename: ")
 name = tostring(read())
+
 --decompress string
 content = textutils.unserialize(msg)
+
 --write to file
 local file = fs.open(name, "w")
 file.write(content)
+
+--finish up
 file.close()
 rednet.close(modemSide)
diff --git a/send_file b/send_file
index 789f6ce..3fe0038 100644
--- a/send_file
+++ b/send_file
@@ -1,21 +1,28 @@
 dofile("utils")
-modemSide = utils.getSideOf("modem")
 
+--init rednet
+modemSide = utils.getSideOf("modem")
 rednet.open(modemSide)
 
+--get file content into right format
 term.write("Path: ")
 path = tostring(read())
-
 local file = fs.open(path, "r")
+if file == nil then
+	print("File does not exist!")
+	return
+end
 content = file.readAll()
 data = textutils.serialize(content)
 
+--get receiver
 term.write("Receiver id: ")
 id = tonumber(read())
 
 print("Initialize receiver please!")
 print("Press 's' to send")
 
+--wait for button press
 local event, c = os.pullEvent("char")
 if c == "s" then
     print("Sending...")
@@ -25,4 +32,5 @@ else
     print("Aborted.")
 end
 
+--finish up
 rednet.close(modemSide)