diff --git a/projects/plugins/jetpack/_inc/client/ai/style.scss b/projects/plugins/jetpack/_inc/client/ai/style.scss
index 7736c579eeae..b3a7a0907ea6 100644
--- a/projects/plugins/jetpack/_inc/client/ai/style.scss
+++ b/projects/plugins/jetpack/_inc/client/ai/style.scss
@@ -1,6 +1,6 @@
 @use "@automattic/jetpack-base-styles/admin-page-layout" as *;
 
-body.jetpack_page_ai {
+body.jetpack_page_jetpack-ai {
 
 	@include jetpack-admin-page-layout;
 }
diff --git a/projects/plugins/jetpack/changelog/fix-ai-page-layout-selector b/projects/plugins/jetpack/changelog/fix-ai-page-layout-selector
new file mode 100644
index 000000000000..8dd7de50a29c
--- /dev/null
+++ b/projects/plugins/jetpack/changelog/fix-ai-page-layout-selector
@@ -0,0 +1,4 @@
+Significance: patch
+Type: bugfix
+
+AI page: update the layout-mixin selector to match the renamed `jetpack-ai` body class so the page layout (sticky header, scrollable middle, pinned footer) applies again.