diff --git a/src/OpenSRS/Helper/OpenSrsApi.php b/src/OpenSRS/Helper/OpenSrsApi.php
index f7440ed..4724944 100644
--- a/src/OpenSRS/Helper/OpenSrsApi.php
+++ b/src/OpenSRS/Helper/OpenSrsApi.php
@@ -322,11 +322,9 @@ private static function isAssoc(array &$array): bool
             return true;
         }
 
-        if (is_array($array)) {
-            foreach ($array as $k => $v) {
-                if (!is_int($k)) {
-                    return true;
-                }
+        foreach ($array as $k => $v) {
+            if (!is_int($k)) {
+                return true;
             }
         }