diff --git a/accessible/src/base/nsAccessibilityAtomList.h b/accessible/src/base/nsAccessibilityAtomList.h
index 51a698ff4ae..b0c66e3fe30 100755
--- a/accessible/src/base/nsAccessibilityAtomList.h
+++ b/accessible/src/base/nsAccessibilityAtomList.h
@@ -231,7 +231,7 @@ ACCESSIBILITY_ATOM(aria_valuetext, "aria-valuetext")
 ACCESSIBILITY_ATOM(defaultLabel, "defaultLabel")
 
 // Object attributes
-ACCESSIBILITY_ATOM(cellIndex, "cell-index")
+ACCESSIBILITY_ATOM(tableCellIndex, "table-cell-index")
 ACCESSIBILITY_ATOM(containerAtomic, "container-atomic")
 ACCESSIBILITY_ATOM(containerBusy, "container-busy")
 ACCESSIBILITY_ATOM(containerChannel, "container-channel")
diff --git a/accessible/src/html/nsHTMLTableAccessible.cpp b/accessible/src/html/nsHTMLTableAccessible.cpp
index f75e955ea2b..5c26c853767 100644
--- a/accessible/src/html/nsHTMLTableAccessible.cpp
+++ b/accessible/src/html/nsHTMLTableAccessible.cpp
@@ -124,7 +124,7 @@ nsHTMLTableCellAccessible::GetAttributesInternal(nsIPersistentProperties *aAttri
 
       nsAutoString stringIdx;
       stringIdx.AppendInt(idx);
-      nsAccUtils::SetAccAttr(aAttributes, nsAccessibilityAtoms::cellIndex,
+      nsAccUtils::SetAccAttr(aAttributes, nsAccessibilityAtoms::tableCellIndex,
                              stringIdx);
       return NS_OK;
     }
diff --git a/accessible/tests/mochitest/test_table_indexes.html b/accessible/tests/mochitest/test_table_indexes.html
index 41e4d056527..a291a5e19d7 100644
--- a/accessible/tests/mochitest/test_table_indexes.html
+++ b/accessible/tests/mochitest/test_table_indexes.html
@@ -89,7 +89,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=410052
 
         if (cellAcc) {
           var attrs = cellAcc.attributes;
-          is (parseInt(attrs.getStringProperty("cell-index")), index,
+          is (parseInt(attrs.getStringProperty("table-cell-index")), index,
               aId + ": cell index from object attributes of cell accessible isn't corrent.");
         }
       }