diff --git a/Using-the-library-with-Arduino.md b/Using-the-library-with-Arduino.md
index 9a013b9..0daf898 100644
--- a/Using-the-library-with-Arduino.md
+++ b/Using-the-library-with-Arduino.md
@@ -8,7 +8,7 @@ If you don't use the Arduino IDE, please read [Using the library without Arduino
 ArduinoJson is available in Arduino's Library Manager.
 You can automatically install it from there.
 
-Note: if ArduinoJson doesn't appear in Libray Manager, or only if old version are listed, try to delete the local cache. For example, on Windows, you need to delete:
+Note: if ArduinoJson doesn't appear in Libray Manager, or if only old versions are listed, try to delete the local cache. For example, on Windows, you need to delete:
 
 * `%LOCALAPPDATA%\Arduino15\library_index.json`
 * `%LOCALAPPDATA%\Arduino15\library_index.json.tmp.gz`