diff --git a/src/vm.c b/src/vm.c
index 95e1f0a..79c127b 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -851,6 +851,14 @@ static enum opcode execute_instruction(enum opcode opcode)
 		stack_push(lhs_page == rhs_page && lhs_var == rhs_var ? 1 : 0);
 		break;
 	}
+	case R_NOTE: {
+		int rhs_var = stack_pop().i;
+		int rhs_page = stack_pop().i;
+		int lhs_var = stack_pop().i;
+		int lhs_page = stack_pop().i;
+		stack_push(lhs_page == rhs_page && lhs_var == rhs_var ? 0 : 1);
+		break;
+	}
 	case NEW: {
 		union vm_value v;
 		create_struct(stack_pop().i, &v);
diff --git a/test/Source/lang.jaf b/test/Source/lang.jaf
index 48af3c4..e8c19de 100755
--- a/test/Source/lang.jaf
+++ b/test/Source/lang.jaf
@@ -97,6 +97,24 @@ void set_page_ref(int v)
 	gi <- v;
 }
 
+void test_ref_compare(void)
+{
+	int i;
+	int j;
+	ref int rn;
+	ref int ri = i;
+	ref int rj = j;
+
+	test_bool("NULL === NULL", rn === NULL, true);
+	test_bool("NULL !== NULL", rn !== NULL, false);
+	test_bool("ri === NULL",   ri === NULL, false);
+	test_bool("ri !== NULL",   ri !== NULL, true);
+	test_bool("ri === ri",     ri === ri,   true);
+	test_bool("ri !== ri",     ri !== ri,   false);
+	test_bool("ri === rj",     ri === rj,   false);
+	test_bool("ri !== rj",     ri !== rj,   true);
+}
+
 void func_stack2(void)
 {
 	func_stack1();
@@ -140,6 +158,7 @@ void test_lang(void)
 	func_stack2();
 	'message1';
 	'message2';
+	test_ref_compare();
 }
 
 int msg_count = 0;