diff --git a/src/test/java/be/more/reactive/S03_AllOf.java b/src/test/java/be/more/reactive/S03_AllOf.java
index af2bdda..e16e980 100644
--- a/src/test/java/be/more/reactive/S03_AllOf.java
+++ b/src/test/java/be/more/reactive/S03_AllOf.java
@@ -35,7 +35,7 @@ public void allOf() throws Exception {
             } catch (Exception e) {
                 log.error("", e);
             }
-        });
+        }).get();
 
     }