diff --git a/app/assets/js/configmanager.js b/app/assets/js/configmanager.js
index f7181c2096..1117cc7876 100644
--- a/app/assets/js/configmanager.js
+++ b/app/assets/js/configmanager.js
@@ -88,7 +88,7 @@ exports.getAbsoluteMinRAM = function(){
 
 exports.getAbsoluteMaxRAM = function(){
     const mem = os.totalmem()
-    return Math.floor((mem/1000000000))
+    return Math.floor((mem - 1000000000) / 1000000000)
 }
 
 function resolveMaxRAM(){
@@ -847,4 +847,4 @@ exports.updateMicrosoftAuth = (accessToken, expiresAt) => {
     config.microsoftAuth.expires_at = expiresAt
 
     return config.microsoftAuth
-}  
\ No newline at end of file
+}