diff --git a/tests/Makefile.am b/tests/Makefile.am
index 184d3e6..38fa21c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,4 +1,4 @@
-EXTRA_DIST = README unit-tests.sh
+EXTRA_DIST = README.md unit-tests.sh
 
 noinst_PROGRAMS = \
 	bandwidth-server-one \
diff --git a/tests/README b/tests/README
deleted file mode 100644
index 04d192b..0000000
--- a/tests/README
+++ /dev/null
@@ -1,42 +0,0 @@
-License
--------
-Test programs of this directory are provided under BSD license (see associated
-LICENSE file).
-
-Compilation
------------
-After installation, you can use pkg-config to compile these tests.
-For example, to compile random-test-server run:
-
-gcc random-test-server.c -o random-test-server `pkg-config --libs --cflags libmodbus`
-
-random-test-server
------------------
-It's necessary to launch this server before run random-test-client. By
-default, it receives and responses to Modbus query on the localhost
-and port 1502.
-
-random-test-client
-------------------
-This programm sends many different queries to a large range of
-addresses and values to test the communication between the client and
-the server.
-
-unit-test-server
-unit-test-client
-----------------
-By default, this program sends some queries with the values defined in
-unit-test.h and checks the responses. These programs are useful to
-test the protocol implementation.
-
-bandwidth-server-one
-bandwidth-server-many-up
-bandwidth-client
------------------------
-It returns some very useful informations about the performance of
-transfert rate between the server and the client.
-
-- bandwidth-server-one: it can handles only one connection with a client.
-- bandwidth-server-many-up: it opens a connection each time a new client asks
-  for, but the number of connection is limited. The same server process handles
-  all the connections.
diff --git a/tests/README.md b/tests/README.md
new file mode 100644
index 0000000..810dc8c
--- /dev/null
+++ b/tests/README.md
@@ -0,0 +1,27 @@
+# License
+Test programs of this directory are provided under BSD license (see associated
+LICENSE file).
+
+# Compilation
+After installation, you can use pkg-config to compile these tests.
+For example, to compile random-test-server run:
+
+gcc random-test-server.c -o random-test-server `pkg-config --libs --cflags libmodbus`
+
+- `random-test-server` is necessary to launch a server before running
+random-test-client. By default, it receives and replies to Modbus query on the
+localhost and port 1502.
+
+- `random-test-client` sends many different queries to a large range of
+addresses and values to test the communication between the client and the
+server.
+
+- `unit-test-server` and `unit-test-client` run a full unit test suite. These
+programs are essential to test the Modbus protocol implementation and libmodbus
+behavior.
+
+- `bandwidth-server-one`, `bandwidth-server-many-up` and `bandwidth-client`
+ return very useful information about the performance of transfert rate between
+ the server and the client. `bandwidth-server-one` can only handles one
+ connection at once with a client whereas `bandwidth-server-many-up` opens a
+ connection for each new clients (with a limit).