diff --git a/doc/doxygen/src/mainpage.md b/doc/doxygen/src/mainpage.md
index d8243a3c35..18e3c89a63 100644
--- a/doc/doxygen/src/mainpage.md
+++ b/doc/doxygen/src/mainpage.md
@@ -19,7 +19,7 @@ microcontroller architectures, radio drivers, sensors, and configurations for
 entire platforms, e.g. Atmel SAM R21 Xplained Pro, Zolertia Z1, STM32 Discovery
 Boards etc. (see the list of
 [supported boards](https://www.riot-os.org/boards.html).
-Across all supported hardware (32-bit, 16-bit, and 8-bit platforms). RIOT
+Across all supported hardware (32-bit, 16-bit, and 8-bit platforms), RIOT
 provides a consistent API and enables C and C++ application programming,
 with  multithreading, IPC, system timers, mutexes etc.