diff --git a/ext/dom/config.m4 b/ext/dom/config.m4
index b279bccd5bd..c6c67ced36e 100644
--- a/ext/dom/config.m4
+++ b/ext/dom/config.m4
@@ -206,7 +206,7 @@ if test "$PHP_DOM" != "no"; then
         html5_parser.c
         html5_serializer.c
         infra.c
-        inner_html_mixin.c
+        inner_outer_html_mixin.c
         namednodemap.c
         namespace_compat.c
         node.c
diff --git a/ext/dom/config.w32 b/ext/dom/config.w32
index 231f005895f..1db4f6d11ba 100644
--- a/ext/dom/config.w32
+++ b/ext/dom/config.w32
@@ -10,7 +10,7 @@ if (PHP_DOM == "yes") {
 		EXTENSION("dom", "php_dom.c attr.c document.c infra.c \
 			xml_document.c html_document.c xml_serializer.c html5_serializer.c html5_parser.c namespace_compat.c private_data.c \
 			domexception.c processinginstruction.c \
-			cdatasection.c documentfragment.c domimplementation.c element.c  inner_html_mixin.c \
+			cdatasection.c documentfragment.c domimplementation.c element.c inner_outer_html_mixin.c \
 			node.c characterdata.c documenttype.c \
 			entity.c nodelist.c html_collection.c text.c comment.c \
 			entityreference.c \
diff --git a/ext/dom/inner_html_mixin.c b/ext/dom/inner_outer_html_mixin.c
similarity index 100%
rename from ext/dom/inner_html_mixin.c
rename to ext/dom/inner_outer_html_mixin.c