diff --git a/core/core-frontend/src/views/dashboard/MobileBackgroundSelector.vue b/core/core-frontend/src/views/dashboard/MobileBackgroundSelector.vue
index aa1aa6a021..a5940c74d8 100644
--- a/core/core-frontend/src/views/dashboard/MobileBackgroundSelector.vue
+++ b/core/core-frontend/src/views/dashboard/MobileBackgroundSelector.vue
@@ -382,7 +382,7 @@ watch(
 
   .image-hint {
     color: #8f959e;
-    size: 14px;
+    font-size: 12px;
     line-height: 22px;
     font-weight: 400;
     margin-top: -6px;