diff --git a/Lib/java/std_set.i b/Lib/java/std_set.i
index 73e0c2cf9..053866bc7 100644
--- a/Lib/java/std_set.i
+++ b/Lib/java/std_set.i
@@ -96,6 +96,10 @@ class set {
       public boolean hasNext() {
         return curr.isNot(end);
       }
+
+      public void remove() {
+        throw new java.lang.UnsupportedOperationException();
+      }
     }.init();
   }
 
diff --git a/Lib/java/std_unordered_set.i b/Lib/java/std_unordered_set.i
index 59726e94d..ddcedf052 100644
--- a/Lib/java/std_unordered_set.i
+++ b/Lib/java/std_unordered_set.i
@@ -92,6 +92,10 @@ class unordered_set {
       public boolean hasNext() {
         return curr.isNot(end);
       }
+
+      public void remove() {
+        throw new java.lang.UnsupportedOperationException();
+      }
     }.init();
   }