diff --git a/README.adoc b/README.adoc
index 70a62c0..252c344 100644
--- a/README.adoc
+++ b/README.adoc
@@ -15,9 +15,9 @@ in touch.
 
 == Previews
 
-image:preview_gentoo.png[]
-image:preview_gentoo-blue.png[]
-image:preview_gentoo-silver.png[]
+image:preview_gentoo.png[title=gentoo]
+image:preview_gentoo-blue.png[title=gentoo-blue]
+image:preview_gentoo-silver.png[title=gentoo-silver]
 
 == Install