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-rw-r--r--Documentation/driver-api/serial/n_gsm.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/driver-api/serial/n_gsm.rst b/Documentation/driver-api/serial/n_gsm.rst
index 286e7ff4d2d9..87dfcd54a96b 100644
--- a/Documentation/driver-api/serial/n_gsm.rst
+++ b/Documentation/driver-api/serial/n_gsm.rst
@@ -5,7 +5,7 @@ GSM 0710 tty multiplexor HOWTO
This line discipline implements the GSM 07.10 multiplexing protocol
detailed in the following 3GPP document:
- http://www.3gpp.org/ftp/Specs/archive/07_series/07.10/0710-720.zip
+ https://www.3gpp.org/ftp/Specs/archive/07_series/07.10/0710-720.zip
This document give some hints on how to use this driver with GPRS and 3G
modems connected to a physical serial port.