diff --git a/Radiosonde.md b/Radiosonde.md
index 1ff58c3..9aa3255 100644
--- a/Radiosonde.md
+++ b/Radiosonde.md
@@ -1,6 +1,6 @@
 # Radio Types + Values Implemented
 
-https://radiosondy.info/index.php
+https://radiosondy.info/
 
 ### MeteoModem M10 
 * Latitude