diff --git a/servefiles/servefiles.py b/servefiles/servefiles.py
index 5d85b51..8325af0 100644
--- a/servefiles/servefiles.py
+++ b/servefiles/servefiles.py
@@ -59,6 +59,14 @@ print("URLS:")
 print(qrData)
 print("")
 
+print("Generating QR code...")
+
+try:
+	qrImage = qrcode.make(qrData, box_size=5)
+except qrcode.exceptions.DataOverflowError:
+	print("Error: URL list too large for a QR code. Try reducing file name lengths or the number of files to send.")
+	sys.exit(1)
+
 print("Opening HTTP server on port 8080...")
 
 server = TCPServer(("", 8080), SimpleHTTPRequestHandler)
@@ -66,10 +74,6 @@ thread = threading.Thread(target=server.serve_forever)
 thread.start()
 atexit.register(server.shutdown)
 
-print("Generating QR code...")
-
-qrImage = qrcode.make(qrData, box_size=5)
-
 print("Displaying QR code...")
 
 root = Tk()