diff --git a/packages/tooltip/src/info-tooltip.js b/packages/tooltip/src/info-tooltip.js
index 62e4dbae5f62b8c8b86e5a614b22fa970a370de7..d3324301bdd2350c78d9299ab43b1a3331eb456a 100644
--- a/packages/tooltip/src/info-tooltip.js
+++ b/packages/tooltip/src/info-tooltip.js
@@ -49,6 +49,10 @@ export class InfoTooltip extends ScopedElementsMixin(DBPLitElement) {
                 position: relative;
             }
 
+            a {
+                text-decoration-line: underline;
+                text-decoration-style: dotted;
+            }
         `;
     }