diff --git a/NEWS b/NEWS
index ae8cf7dbb874..07678f94647a 100644
--- a/NEWS
+++ b/NEWS
@@ -16,6 +16,11 @@ PHP                                                                        NEWS
     Phar::addEmptyDir() for paths starting with "/.phar", while allowing
     non-magic directory names that merely share the ".phar" prefix. (Weilin Du)
 
+- Opcache:
+  . Fixed bug GH-22216 (spurious opcache.memory_consumption warning on each new
+    ZTS thread; the directive is also reported as 0 in worker threads).
+    (Daisuke Komazaki)
+
 - Zlib:
   . Fixed memory leak if deflate initialization fails and there is a dict.
     (ndossche)
diff --git a/ext/opcache/zend_accelerator_module.c b/ext/opcache/zend_accelerator_module.c
index 6f668af9b714..882c78fd1f2a 100644
--- a/ext/opcache/zend_accelerator_module.c
+++ b/ext/opcache/zend_accelerator_module.c
@@ -79,7 +79,9 @@ static int validate_api_restriction(void)
 
 static ZEND_INI_MH(OnUpdateMemoryConsumption)
 {
-	if (accel_startup_ok) {
+	/* On ZTS, each new thread runs the on_modify handlers at STAGE_STARTUP to
+	 * populate its own globals; that is thread init, not a post-startup change. */
+	if (accel_startup_ok && stage != ZEND_INI_STAGE_STARTUP) {
 		if (strcmp(sapi_module.name, "fpm-fcgi") == 0) {
 			zend_accel_error(ACCEL_LOG_WARNING, "opcache.memory_consumption cannot be changed when OPcache is already set up. Are you using php_admin_value[opcache.memory_consumption] in an individual pool's configuration?\n");
 		} else {