diff --git a/accessible/atk/AccessibleWrap.cpp b/accessible/atk/AccessibleWrap.cpp
index 06147a2cc373..7c20dc149220 100644
--- a/accessible/atk/AccessibleWrap.cpp
+++ b/accessible/atk/AccessibleWrap.cpp
@@ -636,6 +636,10 @@ AtkRole getRoleCB(AtkObject* aAtkObj) {
 }
 
 static AtkAttributeSet* ConvertToAtkAttributeSet(AccAttributes* aAttributes) {
+  if (!aAttributes) {
+    return nullptr;
+  }
+
   AtkAttributeSet* objAttributeSet = nullptr;
 
   for (auto iter : *aAttributes) {