diff --git a/src/hooks/useAxios.ts b/src/hooks/useAxios.ts
index 27b04a8..b905511 100644
--- a/src/hooks/useAxios.ts
+++ b/src/hooks/useAxios.ts
@@ -91,15 +91,13 @@ export function useAxios() {
 
         // Handle uppercase snake_case (e.g., USER_NAME -> userName)
         // Handle lowercase snake_case (e.g., user_name -> userName)
-        if (/^[A-Z_]+$/.test(key) || /^[a-z_]+$/.test(key)) {
+        if (/^[A-Z0-9_]+$/.test(key) || /^[a-z0-9_]+$/.test(key)) {
           transformedKey = snakeToCamel(key)
         }
         // Handle single uppercase word (e.g., ROLE -> role)
-        else if (/^[A-Z]+$/.test(key)) {
+        else if (/^[A-Z0-9]+$/.test(key)) {
           transformedKey = key.toLowerCase()
         }
-        // Preserve existing camelCase
-
         acc[transformedKey] = transformObjectKeys(obj[key])
         return acc
       }, {})
@@ -109,7 +107,7 @@ export function useAxios() {
   }
 
   const snakeToCamel = (str: string): string => {
-    return str.toLowerCase().replace(/([-_][a-z])/g, (group) => group.toUpperCase().replace('-', '').replace('_', ''))
+    return str.toLowerCase().replace(/_([a-z])/g, (match, letter) => letter.toUpperCase())
   }
 
   return {