diff --git a/ext/opcache/tests/bug78175_2.phpt b/ext/opcache/tests/bug78175_2.phpt
index 0030962c4fb71..a994c3568617d 100644
--- a/ext/opcache/tests/bug78175_2.phpt
+++ b/ext/opcache/tests/bug78175_2.phpt
@@ -10,7 +10,6 @@ opcache
 --SKIPIF--
 <?php
 if (PHP_OS_FAMILY == 'Windows') die('skip Preloading is not supported on Windows');
-if (PHP_ZTS) die('xfail GH-8588');
 ?>
 --FILE--
 <?php
diff --git a/ext/opcache/tests/bug78376.phpt b/ext/opcache/tests/bug78376.phpt
index 66360c477283b..d6b2dd7cf5c04 100644
--- a/ext/opcache/tests/bug78376.phpt
+++ b/ext/opcache/tests/bug78376.phpt
@@ -10,7 +10,6 @@ opcache
 --SKIPIF--
 <?php
 if (PHP_OS_FAMILY == 'Windows') die('skip Preloading is not supported on Windows');
-if (PHP_ZTS) die('xfail GH-8588');
 ?>
 --FILE--
 <?php
diff --git a/ext/opcache/tests/preload_method_static_vars.phpt b/ext/opcache/tests/preload_method_static_vars.phpt
index a714c23aef1f6..52edfc0fd338a 100644
--- a/ext/opcache/tests/preload_method_static_vars.phpt
+++ b/ext/opcache/tests/preload_method_static_vars.phpt
@@ -10,7 +10,6 @@ opcache
 --SKIPIF--
 <?php
 if (PHP_OS_FAMILY == 'Windows') die('skip Preloading is not supported on Windows');
-if (PHP_ZTS) die('xfail GH-8588');
 ?>
 --FILE--
 <?php
diff --git a/ext/opcache/tests/preload_trait_static.phpt b/ext/opcache/tests/preload_trait_static.phpt
index 1fed1c11c2aad..cbf09c57a07d0 100644
--- a/ext/opcache/tests/preload_trait_static.phpt
+++ b/ext/opcache/tests/preload_trait_static.phpt
@@ -10,7 +10,6 @@ opcache
 --SKIPIF--
 <?php
 if (PHP_OS_FAMILY == 'Windows') die('skip Preloading is not supported on Windows');
-if (PHP_ZTS) die('xfail GH-8588');
 ?>
 --FILE--
 <?php