diff --git a/modules/nlb/book-to-pef/src/main/resources/css/nlb-default.scss b/modules/nlb/book-to-pef/src/main/resources/css/nlb-default.scss
index 5bb3b3cef1..cdf265b9c9 100644
--- a/modules/nlb/book-to-pef/src/main/resources/css/nlb-default.scss
+++ b/modules/nlb/book-to-pef/src/main/resources/css/nlb-default.scss
@@ -164,6 +164,15 @@ level4 ~ level4 { volume-break-inside: -obfl-keep(5); }
 level5 ~ level5 { volume-break-inside: -obfl-keep(4); }
 level6 ~ level6 { volume-break-inside: -obfl-keep(3); }
 
+@for $i from 1 through 6 {
+    h#{$i} {
+        -obfl-keep-with-next-sheets: 1;
+    }
+    level#{$i} ~ level#{$i} > h#{$i} {
+        -obfl-keep-with-next-sheets: 0;
+    }
+}
+
 /* Volume breaking rules based on level depth: EPUB/HTML */
 html:has(body ~ body) > body, html:not(:has(body ~ body)) > body > section {
         &:not(.pef-titlepage):not(.pef-about):not(:has(> #generated-volume-toc)):not(:has(> #generated-document-toc)) {