diff --git a/app/components/public/TheHeader.vue b/app/components/public/TheHeader.vue
index a1298319..8230ce67 100644
--- a/app/components/public/TheHeader.vue
+++ b/app/components/public/TheHeader.vue
@@ -35,8 +35,16 @@ watch(() => route.fullPath, close)
     >
       <ul id="secondary-menu" class="role-list stack">
         <li v-for="item in secondaryNav" :key="item.key" class="menu-item">
+          <!-- The Research Gallery is this site's own gallery, on its subdomain: it opens in the same tab like
+               every other page. Only the external links (Give) open a new tab. -->
           <a
-            v-if="item.href"
+            v-if="item.hrefConfig"
+            :href="item.href"
+          >
+            {{ t(item.key) }}
+          </a>
+          <a
+            v-else-if="item.href"
             :href="item.href"
             target="_blank"
             rel="noopener"
diff --git a/app/utils/nav.ts b/app/utils/nav.ts
index dfac1933..88b8212e 100644
--- a/app/utils/nav.ts
+++ b/app/utils/nav.ts
@@ -7,7 +7,8 @@ export interface NavItem {
   to?: string            // internal route (passed through localePath in components)
   href?: string          // external URL (no locale prefix)
   rel?: string           // e.g. 'noopener'
-  // external URL taken from runtime config (public.<name>) instead of a fixed href
+  // the Research Gallery: this site's /research-gallery, which the server sends to the deployment's gallery;
+  // it opens in the same tab (components/public/TheHeader.vue)
   hrefConfig?: 'researchGalleryUrl'
   // kept in the list but not shown: switched off rather than deleted
   off?: boolean