diff --git a/boards/nucleo-f722ze/doc.txt b/boards/nucleo-f722ze/doc.txt
index bb08c959ba..cf146bd123 100644
--- a/boards/nucleo-f722ze/doc.txt
+++ b/boards/nucleo-f722ze/doc.txt
@@ -10,7 +10,7 @@ STM32F722ZE microcontroller with 256KiB of RAM and 512KiB of Flash.
 
 ## Pinout
 
-@image html pinouts/nucleo-f446ze-and-f722ze.svg "Pinout for the nucleo-f722ze (from STM board manual)" width=50%
+@image html pinouts/nucleo-f446ze-and-f722ze.svg "Pinout for the Nucleo-F722ZE (from STM ser manual, UM1974, http://www.st.com/resource/en/user_manual/dm00244518.pdf, page 35)" width=50%
 
 ### MCU
 
diff --git a/boards/nucleo-f767zi/doc.txt b/boards/nucleo-f767zi/doc.txt
index 57840e56e0..0fad47e2ed 100644
--- a/boards/nucleo-f767zi/doc.txt
+++ b/boards/nucleo-f767zi/doc.txt
@@ -10,7 +10,7 @@ STM32F767ZI microcontroller with 512KiB of RAM and 2 MiB of Flash.
 
 ## Pinout
 
-@image html pinouts/nucleo-f207zg-and-more.svg "Pinout for the nucleo-f767zi (from STM board manual)" width=50%
+@image html pinouts/nucleo-f207zg-and-more.svg "Pinout for the Nucleo-F767ZI (from STM user manual, UM1974, http://www.st.com/resource/en/user_manual/dm00244518.pdf, page 32)" width=50%
 
 ### MCU