diff --git a/src/runtime2/tests/mod.rs b/src/runtime2/tests/mod.rs
index 1573f0d1553fd3fe55c93a78503402ae19c7beef..2a481ff71dd208cea4ea0b3705c1192256b281a3 100644
--- a/src/runtime2/tests/mod.rs
+++ b/src/runtime2/tests/mod.rs
@@ -135,36 +135,37 @@ fn test_simple_select() {
 }
 
 #[test]
-fn test_empty_select() {
+fn test_unguarded_select() {
     let pd = ProtocolDescription::parse(b"
-    primitive constructor() {
+    primitive constructor_outside_select() {
         u32 index = 0;
         while (index < 5) {
             sync select { auto v = () -> print(\"hello\"); }
             index += 1;
         }
     }
+
+    primitive constructor_inside_select() {
+        u32 index = 0;
+        while (index < 5) {
+            sync select { auto v = () -> index += 1; }
+        }
+    }
     ").expect("compilation");
     let rt = Runtime::new(3, false, pd);
-    create_component(&rt, "", "constructor", no_args());
+    create_component(&rt, "", "constructor_outside_select", no_args());
+    create_component(&rt, "", "constructor_inside_select", no_args());
 }
 
 #[test]
-fn test_empty_select_should_not_work() {
+fn test_empty_select() {
     let pd = ProtocolDescription::parse(b"
     primitive constructor() {
         u32 index = 0;
-        print(\"before while\");
         while (index < 5) {
-            print(\"before sync\");
-            sync {
-                print(\"before select\");
-                select { }
-                print(\"after select\");
-            }
-            print(\"after sync\");
+            sync select {}
+            index += 1;
         }
-        print(\"after while\");
     }
     ").expect("compilation");
     let rt = Runtime::new(3, false, pd);