diff --git a/BUILD.md b/BUILD.md
index 9e3087d..939fb63 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -98,7 +98,8 @@ Download the firmware sources:
     cd ~
     git clone https://github.com/juribeparada/MMDVM_HS
     cd MMDVM_HS/
-    git clone https://github.com/juribeparada/STM32F10X_Lib
+    git submodule init
+    git submodule update
 
 (Please do not download any different code inside MMDVM_HS folder)
 
@@ -293,7 +294,8 @@ Download the sources:
     cd ~
     git clone https://github.com/juribeparada/MMDVM_HS
     cd MMDVM_HS/
-    git clone https://github.com/juribeparada/STM32F10X_Lib
+    git submodule init
+    git submodule update
 
 (Please do not download any different code inside MMDVM_HS folder)
 
@@ -429,7 +431,8 @@ Download the sources:
     cd ~
     git clone https://github.com/juribeparada/MMDVM_HS
     cd MMDVM_HS/
-    git clone https://github.com/juribeparada/STM32F10X_Lib
+    git submodule init
+    git submodule update
 
 (Please do not download any different code inside MMDVM_HS folder)
 
diff --git a/README.md b/README.md
index 26379e8..32deaaf 100644
--- a/README.md
+++ b/README.md
@@ -120,7 +120,8 @@ Download the sources:
     cd ~
     git clone https://github.com/juribeparada/MMDVM_HS
     cd MMDVM_HS/
-    git clone https://github.com/juribeparada/STM32F10X_Lib
+    git submodule init
+    git submodule update
 
 Build the firmware with USB bootloader support (the default Config.h is OK for Libre Kit):
 
@@ -192,7 +193,8 @@ Download the firmware sources:
     cd ~
     git clone https://github.com/juribeparada/MMDVM_HS
     cd MMDVM_HS/
-    git clone https://github.com/juribeparada/STM32F10X_Lib
+    git submodule init
+    git submodule update
 
 Edit Config.h