2 files changed, 2 insertions, 0 deletions
diff --git a/server/src/com/vaadin/ui/AbstractEmbedded.java b/server/src/com/vaadin/ui/AbstractEmbedded.java
index d004ca7635..a38e9bb788 100644
--- a/server/src/com/vaadin/ui/AbstractEmbedded.java
+++ b/server/src/com/vaadin/ui/AbstractEmbedded.java
@@ -108,6 +108,7 @@ public abstract class AbstractEmbedded extends AbstractComponent {
     protected Collection<String> getCustomAttributes() {
         Collection<String> c = super.getCustomAttributes();
         c.add("alternate-text");
+        c.add("alt");
         return c;
     }
 }
diff --git a/server/src/com/vaadin/ui/Slider.java b/server/src/com/vaadin/ui/Slider.java
index e85f634ac4..1fd6d425fe 100644
--- a/server/src/com/vaadin/ui/Slider.java
+++ b/server/src/com/vaadin/ui/Slider.java
@@ -392,6 +392,7 @@ public class Slider extends AbstractField<Double> {
     protected Collection<String> getCustomAttributes() {
         Collection<String> result = super.getCustomAttributes();
         result.add("orientation");
+        result.add("vertical");
         return result;
     }
 }