diff --git a/Documentation/debugger.rst b/Documentation/debugger.rst
index 2a2560f216a8f51a32eecbd0481af72e6cc5ee35..5d758fc8736043ffdaea463daff8d127f4a6b7e6 100644
--- a/Documentation/debugger.rst
+++ b/Documentation/debugger.rst
@@ -23,10 +23,11 @@ the following commands:
    $ ./bootstrap
    $ ./configure --disable-werror
 
-Make sure ``CMSIS-DAP Compliant Debugger`` is set to **yes (auto)** after
-running ``./configure`` (if it is not, you might need to install ``libhidapi-dev``
-(Ubuntu)). If you get errors making the documentation you can 
-``touch doc/openocd.info`` to skip it and continue with ``make``.
+.. warning:
+    Make sure ``CMSIS-DAP Compliant Debugger`` is set to **yes (auto)** after
+    running ``./configure`` (if it is not, you might need to install ``libhidapi-dev``
+    (Ubuntu)). If you get errors making the documentation you can 
+    ``touch doc/openocd.info`` to skip it and continue with ``make``.
 
 .. code-block:: shell-session