diff --git a/ext/ctype/tests/lc_ctype_inheritance.phpt b/ext/ctype/tests/lc_ctype_inheritance.phpt
index f69884d225b..6f37941d8f4 100644
--- a/ext/ctype/tests/lc_ctype_inheritance.phpt
+++ b/ext/ctype/tests/lc_ctype_inheritance.phpt
@@ -1,5 +1,7 @@
 --TEST--
 Do not inherit LC_CTYPE from environment
+--EXTENSIONS--
+ctype
 --SKIPIF--
 <?php
 if (setlocale(LC_ALL, 'invalid') === 'invalid') { die('skip setlocale() is broken /w musl'); }
diff --git a/ext/dom/tests/xpath_domnamespacenode.phpt b/ext/dom/tests/xpath_domnamespacenode.phpt
index b9238462439..f0bfbed10dd 100644
--- a/ext/dom/tests/xpath_domnamespacenode.phpt
+++ b/ext/dom/tests/xpath_domnamespacenode.phpt
@@ -1,5 +1,7 @@
 --TEST--
 DOMXPath::query() can return DOMNodeList with DOMNameSpaceNode items
+--EXTENSIONS--
+dom
 --FILE--
 <?php
 
diff --git a/ext/filter/tests/filter_default_deprecation.phpt b/ext/filter/tests/filter_default_deprecation.phpt
index 4762cdce5f7..38170dd493a 100644
--- a/ext/filter/tests/filter_default_deprecation.phpt
+++ b/ext/filter/tests/filter_default_deprecation.phpt
@@ -1,5 +1,7 @@
 --TEST--
 filter.default is deprecated
+--EXTENSIONS--
+filter
 --INI--
 filter.default=special_chars
 --FILE--
diff --git a/ext/openssl/tests/openssl_dh_compute_key.phpt b/ext/openssl/tests/openssl_dh_compute_key.phpt
index 8730f4b57da..bf14057a575 100644
--- a/ext/openssl/tests/openssl_dh_compute_key.phpt
+++ b/ext/openssl/tests/openssl_dh_compute_key.phpt
@@ -1,5 +1,7 @@
 --TEST--
 openssl_dh_compute_key()
+--EXTENSIONS--
+openssl
 --FILE--
 <?php
 
diff --git a/ext/tokenizer/tests/bug81342.phpt b/ext/tokenizer/tests/bug81342.phpt
index 57d89de3df6..66a35fac950 100644
--- a/ext/tokenizer/tests/bug81342.phpt
+++ b/ext/tokenizer/tests/bug81342.phpt
@@ -1,5 +1,7 @@
 --TEST--
 Bug #81342: New ampersand token parsing depends on new line after it
+--EXTENSIONS--
+tokenizer
 --FILE--
 <?php
 
diff --git a/ext/xmlreader/tests/bug81521.phpt b/ext/xmlreader/tests/bug81521.phpt
index f9e2156e6a2..2789a16e21b 100644
--- a/ext/xmlreader/tests/bug81521.phpt
+++ b/ext/xmlreader/tests/bug81521.phpt
@@ -1,5 +1,7 @@
 --TEST--
 Bug #81521: XMLReader::getParserProperty may throw with a valid property
+--EXTENSIONS--
+xmlreader
 --FILE--
 <?php
 $reader = new XMLReader();