diff --git a/landingPages/landing-utils/landing-header/landing-header.component.ts b/landingPages/landing-utils/landing-header/landing-header.component.ts
index 02a59b36..e18b584f 100644
--- a/landingPages/landing-utils/landing-header/landing-header.component.ts
+++ b/landingPages/landing-utils/landing-header/landing-header.component.ts
@@ -45,7 +45,7 @@ import {AlertModal} from "../../../utils/modal/alert";
         </span>
         <span *ngIf="underCuration">
           . <span title="{{buildCurationTooltip()}}"
-                  uk-tooltip="pos:bottom-right; delay:10; cls: under-curation-tooltip"
+                  uk-tooltip="pos:bottom-right; delay:10;"
                   class="under-curation">Under curation</span>
         </span>
       </div>
@@ -89,9 +89,9 @@ export class LandingHeaderComponent {
   }
   
   public buildCurationTooltip(): string {
-    let tooltipContent: string = "<div class='uk-margin'>";
+    let tooltipContent: string = "<div class='uk-padding-small'>";
     
-    tooltipContent += "<h4>Record in preview</h4>";
+    tooltipContent += "<h5>Record in preview</h5>";
     tooltipContent += "<p>Bibliographic record accepted by the system, but not yet processed by <br> OpenAIRE tools for information quality improvement and de-duplication</p>";
     
     tooltipContent += "</div>";