diff --git a/phpBB/styles/prosilver/template/icons/iconify.html b/phpBB/styles/prosilver/template/icons/iconify.html
index 74820bafc0..480313faca 100644
--- a/phpBB/styles/prosilver/template/icons/iconify.html
+++ b/phpBB/styles/prosilver/template/icons/iconify.html
@@ -1,4 +1,4 @@
 {% spaceless %}
-	<i class="iconify o-icon {{ ICON ~ (CLASSES ? ' ' ~ CLASSES) }}"{% if S_HIDDEN %}{% if TITLE %} title="{{ lang(TITLE) }}"{% endif %} aria-hidden="true"{% endif %}{{ ATTRIBUTES }}></i>
+	<i class="iconify o-icon{{ CLASSES ? ' ' ~ CLASSES }}"{% if S_HIDDEN %}{% if TITLE %} title="{{ lang(TITLE) }}"{% endif %} aria-hidden="true"{% endif %} data-icon="fa:{{ ICON }}" data-inline="true"{{ ATTRIBUTES }}></i>
 	{% if TITLE %}<span{% if S_HIDDEN %} class="sr-only"{% endif %}>{{ lang(TITLE) }}</span>{% endif %}
 {% endspaceless %}
diff --git a/tests/template/extension_test.php b/tests/template/extension_test.php
index fec06fe296..a5af922c02 100644
--- a/tests/template/extension_test.php
+++ b/tests/template/extension_test.php
@@ -313,7 +313,7 @@ class phpbb_template_extension_test extends phpbb_template_template_test_case
 					'attributes'	=> [],
 				],
 				[],
-				'<i class="iconify o-icon phone"></i>',
+				'<i class="iconify o-icon" data-icon="fa:phone" data-inline="true"></i>',
 			],
 			/** Iconify: all options */
 			[
@@ -330,7 +330,7 @@ class phpbb_template_extension_test extends phpbb_template_template_test_case
 				[
 					'ICON_PENCIL'	=> 'Pencil icon',
 				],
-				'<i class="iconify o-icon pencil icon-lg" title="Pencil icon" aria-hidden="true" data-swap="Swap text"></i>
+				'<i class="iconify o-icon icon-lg" title="Pencil icon" aria-hidden="true" data-icon="fa:phone" data-inline="true" data-swap="Swap text"></i>
 				<span class="sr-only">Pencil icon</span>',
 			],
 			/** PNG: default */