diff --git a/app/modules/keypair/index.ts b/app/modules/keypair/index.ts
index 21f88e9ad1c6cec52e3bbe3317fcf8e3180b4937..a809f75fd2b2af3d665f6fa4443f7ad5a119748c 100644
--- a/app/modules/keypair/index.ts
+++ b/app/modules/keypair/index.ts
@@ -34,17 +34,19 @@ export const KeypairDependency = {
       },
       {
         value: "--keyN <N>",
-        desc: "Scrypt `N` parameter. Defaults to 4096.",
+        desc:
+          "Scrypt `N` CPU/memory cost parameter. Must be a power of 2. Defaults to 4096.",
         parser: parseInt,
       },
       {
         value: "--keyr <r>",
-        desc: "Scrypt `N` parameter. Defaults to 16.",
+        desc:
+          "Scrypt `r` The blocksize parameter, which fine-tunes sequential memory read size and performance. Defaults to 16.",
         parser: parseInt,
       },
       {
         value: "--keyp <p>",
-        desc: "Scrypt `N` parameter. Defaults to 1.",
+        desc: "Scrypt `p` Parallelization parameter. Defaults to 1.",
         parser: parseInt,
       },
       {
diff --git a/doc/quick-start.md b/doc/quick-start.md
index 0465553fbe95f43467e06378ef1e8954d0fd0bac..b3e0670478554d4e997677cc8846ba40582e3585 100644
--- a/doc/quick-start.md
+++ b/doc/quick-start.md
@@ -7,7 +7,15 @@
 - [yarn](https://classic.yarnpkg.com/en/docs/install/)
 - [python 2.7](https://www.python.org/downloads/) (Linux? -> you allready have it)
 - [gcc](https://github.com/nodejs/node-gyp#installation)
+```bash
+# install node gyp fo compile C/C++ dependencies (sqlite and leveldb)
+npm i -g node-gyp
+```
 - [rust](https://www.rust-lang.org/learn/get-started)
+```bash
+# install cargo for rust
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+```
 - [Gitlab](https://git.duniter.org/) account (optional, needed to contribute)
 
 ## Install
@@ -15,8 +23,9 @@
 ```bash
 git clone https://git.duniter.org/nodes/typescript/duniter.git
 cd duniter
-yarn
+rustup update
 yarn add duniter-ui
+yarn
 bin/duniter webstart
 ```