diff --git a/chapter5/basic_of_functionalReactivePixels.md b/chapter5/basic_of_functionalReactivePixels.md
index 60fb8e1..01eed34 100644
--- a/chapter5/basic_of_functionalReactivePixels.md
+++ b/chapter5/basic_of_functionalReactivePixels.md
@@ -163,7 +163,7 @@ self.apiHelper = [[PXAPIHelper alloc]
     								[self downloadThumbnailForPhotoModel:model];
 
     								return model;
-    							}] array];
+    							}] array]];
 
     							[subject sendCompleted];
     						}