diff --git a/assign4.md b/assign4.md
index 60a1e3bf8bdf740a4eb7572c05d11f0d54978fb9..b53ed86401f9e5b64410f7320e22c759e0b848af 100644
--- a/assign4.md
+++ b/assign4.md
@@ -127,7 +127,7 @@ serialization to put to a file (use a text editor to look at).
 - Using a custom renderer results in continual "Compiler error: Invalid
   library file" messages. This appears to be a recent [Xcode issue](https://stackoverflow.com/questions/58445093/compiler-error-invalid-library-file-corelocation) and can make debugging with print statements very difficult.
 - Simulate GPS through the debugger's "Features/Location/.." menu.
-- When stopping, and then starting tracking again, you often get a
+- When starting tracking after having recently stopped it, you often get a
   single old location point in the simulator. This does not happen
   when running on a phone, but I deal with it by tossing the first
   location I receive after starting tracking.