diff --git a/docs/src/clock.md b/docs/src/clock.md
index 2f846e4fd3..44582f450b 100644
--- a/docs/src/clock.md
+++ b/docs/src/clock.md
@@ -34,6 +34,10 @@ The recommended approach is to use `setFixedTime` to set the time to a specific
   - `Event.timeStamp`
 :::
 
+:::warning
+If you call `install` at any point in your test, the call _MUST_ occur before any other clock related calls (see note above for list). Calling these methods out of order will result in undefined behavior. For example, you cannot call `setInterval`, followed by `install`, then `clearInterval`, as `install` overrides the native definition of the clock functions.
+:::
+
 ## Test with predefined time
 
 Often you only need to fake `Date.now` while keeping the timers going.