diff --git a/api/src/org/labkey/api/query/AbstractNestableDataRegion.java b/api/src/org/labkey/api/query/AbstractNestableDataRegion.java
index 2392710f88f..00b29cf5acb 100644
--- a/api/src/org/labkey/api/query/AbstractNestableDataRegion.java
+++ b/api/src/org/labkey/api/query/AbstractNestableDataRegion.java
@@ -38,6 +38,7 @@
 
 import static org.labkey.api.util.DOM.A;
 import static org.labkey.api.util.DOM.Attribute.align;
+import static org.labkey.api.util.DOM.Attribute.alt;
 import static org.labkey.api.util.DOM.Attribute.colspan;
 import static org.labkey.api.util.DOM.Attribute.id;
 import static org.labkey.api.util.DOM.Attribute.src;
@@ -94,7 +95,8 @@ protected void renderExtraRecordSelectorContent(RenderContext ctx, HtmlWriter ou
                 at(
                     id, getName() + "-Handle" + value,
                     valign, "middle",
-                    src, ctx.getViewContext().getContextPath() + "/_images/" + (_expanded ? "minus" : "plus") + ".gif"
+                    src, ctx.getViewContext().getContextPath() + "/_images/" + (_expanded ? "minus" : "plus") + ".gif",
+                    alt, _expanded ? "Collapse row" : "Expand row"
                 )
             )
         ).appendTo(out);
diff --git a/api/src/org/labkey/api/util/DOM.java b/api/src/org/labkey/api/util/DOM.java
index f31179179b2..296c9b0bfc8 100644
--- a/api/src/org/labkey/api/util/DOM.java
+++ b/api/src/org/labkey/api/util/DOM.java
@@ -579,6 +579,23 @@ public _Attributes data(boolean condition, String datakey, Object value)
             }
             return this;
         }
+        public _Attributes aria(String ariakey, Object value)
+        {
+            if (null == expandos)
+                expandos = new ArrayList<>();
+            expandos.add(new Pair<>("aria-" + ariakey,value));
+            return this;
+        }
+        public _Attributes aria(boolean condition, String ariakey, Object value)
+        {
+            if (condition)
+            {
+                if (null == expandos)
+                    expandos = new ArrayList<>();
+                expandos.add(new Pair<>("aria-" + ariakey,value));
+            }
+            return this;
+        }
 
         public _Attributes cl(String...names)
         {
diff --git a/api/src/org/labkey/api/util/LinkBuilder.java b/api/src/org/labkey/api/util/LinkBuilder.java
index 13c5ff67262..fde40f659b8 100644
--- a/api/src/org/labkey/api/util/LinkBuilder.java
+++ b/api/src/org/labkey/api/util/LinkBuilder.java
@@ -155,7 +155,8 @@ public Appendable appendTo(Appendable out)
                     .at(!lb.enabled, disabled, true)
                     .data(null != lb.tooltip, "tt", "tooltip")
                     .data(null != lb.tooltip, "placement","top")
-                    .data(null != lb.tooltip, "original-title", lb.tooltip),
+                    .data(null != lb.tooltip, "original-title", lb.tooltip)
+                    .aria(lb.iconCls != null && lb.tooltip != null, "label", lb.tooltip),
                     (lb.iconCls != null ? null : lb.html)
             ).appendTo(out);
         }
diff --git a/api/webapp/clientapi/ext3/PersistentToolTip.js b/api/webapp/clientapi/ext3/PersistentToolTip.js
index a65026904cc..3d02731acbf 100644
--- a/api/webapp/clientapi/ext3/PersistentToolTip.js
+++ b/api/webapp/clientapi/ext3/PersistentToolTip.js
@@ -167,7 +167,7 @@ LABKEY.ext.CalloutTip = Ext.extend(LABKEY.ext.PersistentToolTip, {
       if (!this.targetAutoEl) {
           this.targetAutoEl =
               '<span class="labkey-callout-tip' + (this.leftPlacement ? ' labkey-callout-tip-left' : '' ) + '">' +
-              '<img src="' + LABKEY.contextPath + '/_.gif">' +
+              '<img src="' + LABKEY.contextPath + '/_.gif" alt="Show details">' +
               '</span>';
       }