diff --git a/ext/zend_test/config.m4 b/ext/zend_test/config.m4
index 822254591b0..4b15db47750 100644
--- a/ext/zend_test/config.m4
+++ b/ext/zend_test/config.m4
@@ -1,5 +1,5 @@
 PHP_ARG_ENABLE([zend-test],
-  [whether to enable zend-test extension],
+  [whether to enable zend_test extension],
   [AS_HELP_STRING([--enable-zend-test],
     [Enable zend_test extension])])
 
diff --git a/ext/zend_test/test.c b/ext/zend_test/test.c
index a85fa89add7..ba913285969 100644
--- a/ext/zend_test/test.c
+++ b/ext/zend_test/test.c
@@ -1207,7 +1207,7 @@ PHP_MSHUTDOWN_FUNCTION(zend_test)
 	zend_test_observer_shutdown(SHUTDOWN_FUNC_ARGS_PASSTHRU);
 
 	if (ZT_G(print_stderr_mshutdown)) {
-		fprintf(stderr, "[zend-test] MSHUTDOWN\n");
+		fprintf(stderr, "[zend_test] MSHUTDOWN\n");
 	}
 
 	return SUCCESS;
diff --git a/ext/zend_test/tests/gh8575.phpt b/ext/zend_test/tests/gh8575.phpt
index 9830547479f..cacf8249f31 100644
--- a/ext/zend_test/tests/gh8575.phpt
+++ b/ext/zend_test/tests/gh8575.phpt
@@ -10,4 +10,4 @@ zend_test.print_stderr_mshutdown=1
 ==DONE==
 --EXPECTF--
 ==DONE==
-[zend-test] MSHUTDOWN
+[zend_test] MSHUTDOWN