diff --git a/README.txt b/README.txt
index 8f0e7ba..c7ebe5b 100755
--- a/README.txt
+++ b/README.txt
@@ -82,6 +82,8 @@ Installation
   - How many items to retrieve for each service.
   - Any additional site base URLs to link.
   - Which intervals to use, and in which order to display them.
+    - Note that you must click the "Save" button on the intervals tab.
+      The services will not refresh until you add at least one interval.
   - Which services to use, and in which order to display them.
   - How often to refresh data from the service
   - Any service-specific settings, such as authentication credentials.
@@ -110,6 +112,8 @@ If you don't see any results in the most popular block:
 1) Make sure to click on all of the service and interval tabs.
   - It's possible that although one service/interval might not have any data,
     other ones do.
+  - You must click the "Save" button on the interval tab to initially set the
+    intervals. The values there by default don't do anything until you save the page.
 
 2) Make sure your services are collecting analytics data.
   * For the Drupal services:
@@ -141,4 +145,4 @@ If you don't see any results in the most popular block:
     
   - Run "Refresh stats" and see whether each service is returning any values.
   
-  
\ No newline at end of file
+