diff --git a/build/gen_stub.php b/build/gen_stub.php
index 3a79f2e703e..c83d25d6302 100755
--- a/build/gen_stub.php
+++ b/build/gen_stub.php
@@ -2226,11 +2226,11 @@ OUPUT_EXAMPLE
         return null;
     }
 
-    public function toArgInfoCode(?int $minPHPCompatability): string {
+    public function toArgInfoCode(?int $minPHPCompatibility): string {
         $code = $this->return->beginArgInfo(
             $this->getArgInfoName(),
             $this->numRequiredArgs,
-            $minPHPCompatability === null || $minPHPCompatability >= PHP_81_VERSION_ID
+            $minPHPCompatibility === null || $minPHPCompatibility >= PHP_81_VERSION_ID
         );
 
         foreach ($this->args as $argInfo) {