diff --git a/README.md b/README.md
index 22ee47e..bd774fc 100644
--- a/README.md
+++ b/README.md
@@ -82,6 +82,9 @@ Here are the commands:
 git clone https://github.com/laurencelundblade/QCBOR.git
 git clone https://github.com/laurencelundblade/t_cose.git
 git clone https://github.com/ARMmbed/mbedtls.git
+cd mbedtls
+make generated_files
+cd ..
 git clone https://github.com/yuichitk/libcsuit.git
 cd libcsuit
 ```