diff --git a/boards/nucleo-f303ze/doc.txt b/boards/nucleo-f303ze/doc.txt
index 8c0159319c..1f83edeafc 100644
--- a/boards/nucleo-f303ze/doc.txt
+++ b/boards/nucleo-f303ze/doc.txt
@@ -14,7 +14,7 @@ STM32F303ZE microcontroller with 64KiB of RAM and 512KiB of ROM.
 
 ## Pinout
 
-@image html pinouts/nucleo-f303ze.svg "Pinout for the nucleo-f303ze (from STM board manual)" width=55%
+@image html pinouts/nucleo-f303ze.svg "Pinout for the Nucleo-F303ZE (from STM user board manual, M1974, http://www.st.com/resource/en/user_manual/dm00244518.pdf, page 33)" width=55%
 
 ### MCU
 | MCU        | STM32F303ZE       |