diff --git a/jre_emul/android/platform/libcore/ojluni/src/main/java/java/util/AbstractMap.java b/jre_emul/android/platform/libcore/ojluni/src/main/java/java/util/AbstractMap.java
index 3f4ab5448a..301da30e6e 100644
--- a/jre_emul/android/platform/libcore/ojluni/src/main/java/java/util/AbstractMap.java
+++ b/jre_emul/android/platform/libcore/ojluni/src/main/java/java/util/AbstractMap.java
@@ -331,8 +331,14 @@ public void clear() {
      * }
      *}</pre>
      */
-    transient Set<K>        keySet;
-    transient Collection<V> values;
+
+    /**
+     * J2ObjC: Despite the discussion above, no field race is safe in J2ObjC because
+     * field access is not atomic in J2ObjC, so mark these volatile so the abstract
+     * implementation is always safe.
+     */
+    transient volatile Set<K>        keySet;
+    transient volatile Collection<V> values;
 
     /**
      * {@inheritDoc}