diff --git a/src/Appwrite/Functions/Validator/Headers.php b/src/Appwrite/Functions/Validator/Headers.php
index ec129f57b6..febaf73cd7 100644
--- a/src/Appwrite/Functions/Validator/Headers.php
+++ b/src/Appwrite/Functions/Validator/Headers.php
@@ -43,41 +43,38 @@ class Headers extends Validator
             return true;
         }
 
-        if (\is_string($value)) {
-            $value = \json_decode($value, true);
-        }
-
         if (!\is_array($value)) {
             return false;
         }
 
         if (json_last_error() !== JSON_ERROR_NONE) {
             return false;
-        } else {
-            if (\is_array($value)) {
-                foreach ($value as $key => $val) {
-                    // Reject non-string keys
-                    if (!\is_string($key) || \strlen($key) === 0) {
-                        return false;
-                    }
+        }
 
-                    // Check if the key is a single character and ensure it is an alphabetic character
-                    if (\strlen($key) === 1 && !preg_match('/^[a-zA-Z]$/', $key)) {
-                        return false;
-                    }
+        if (\is_array($value)) {
+            foreach ($value as $key => $val) {
+                // Reject non-string keys
+                if (!\is_string($key) || \strlen($key) === 0) {
+                    return false;
+                }
 
-                    // Check for invalid characters in keys longer than one character
-                    if (\strlen($key) > 1 && !preg_match('/^[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9]$/', $key)) {
-                        return false;
-                    }
-                    // Check for x-appwrite- prefix
-                    if (str_starts_with($key, 'x-appwrite-')) {
-                        return false;
-                    }
+                // Check if the key is a single character and ensure it is an alphabetic character
+                if (\strlen($key) === 1 && !preg_match('/^[a-zA-Z]$/', $key)) {
+                    return false;
+                }
+
+                // Check for invalid characters in keys longer than one character
+                if (\strlen($key) > 1 && !preg_match('/^[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9]$/', $key)) {
+                    return false;
+                }
+                // Check for x-appwrite- prefix
+                if (str_starts_with($key, 'x-appwrite-')) {
+                    return false;
                 }
             }
             return true;
         }
+        return false;
     }
 
     /**