diff --git a/src/SPC/builder/extension/xlswriter.php b/src/SPC/builder/extension/xlswriter.php
index 8ef826d00..24d32d947 100644
--- a/src/SPC/builder/extension/xlswriter.php
+++ b/src/SPC/builder/extension/xlswriter.php
@@ -7,7 +7,6 @@
 use SPC\builder\Extension;
 use SPC\store\SourcePatcher;
 use SPC\util\CustomExt;
-use SPC\util\GlobalEnvManager;
 
 #[CustomExt('xlswriter')]
 class xlswriter extends Extension
@@ -29,13 +28,6 @@ public function getWindowsConfigureArg(bool $shared = false): string
     public function patchBeforeMake(): bool
     {
         $patched = parent::patchBeforeMake();
-
-        // Remove when https://github.com/viest/php-ext-xlswriter/pull/560 is merged
-        if (PHP_OS_FAMILY !== 'Windows') {
-            GlobalEnvManager::putenv('SPC_CMD_VAR_PHP_MAKE_EXTRA_CFLAGS=' . getenv('SPC_CMD_VAR_PHP_MAKE_EXTRA_CFLAGS') . ' -std=gnu17');
-            $patched = true;
-        }
-
         if (PHP_OS_FAMILY === 'Windows') {
             // fix windows build with openssl extension duplicate symbol bug
             SourcePatcher::patchFile('spc_fix_xlswriter_win32.patch', $this->source_dir);
@@ -48,10 +40,4 @@ public function patchBeforeMake(): bool
         }
         return $patched;
     }
-
-    // Remove when https://github.com/viest/php-ext-xlswriter/pull/560 is merged
-    protected function getExtraEnv(): array
-    {
-        return ['CFLAGS' => '-std=gnu17'];
-    }
 }