diff --git a/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header.html b/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header.html
index d2effddf22..335cc49c9c 100644
--- a/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header.html
+++ b/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header.html
@@ -45,6 +45,7 @@ limitations under the License.
       .titleText::before {
         background-image: var(--header-icon);
         background-size: var(--header-icon-size) var(--header-icon-size);
+        background-repeat: no-repeat;
         content: "";
         display: inline-block;
         height: var(--header-icon-size);