diff --git a/scripts/key-generation/README.md b/scripts/key-generation/README.md
index 1da1684147..f0fb404e8a 100644
--- a/scripts/key-generation/README.md
+++ b/scripts/key-generation/README.md
@@ -38,7 +38,7 @@ In order to produce a keystore file run:
 
 ```sh
 $ yarn install # installs dependencies
-$ PRIVATE_KEY=<private key without the 0x prefix> PASSWORD=<password> yarn run generate # executes the script
+$ PRIVATE_KEY="<private key without the 0x prefix>" PASSWORD="<password>" yarn run generate # executes the script
 ```
 
 As a result a JSON keystore file encoding the provided private key with the