diff --git a/assign1.md b/assign1.md
index ab6e446dd93950f18894af846ed4ac23870cb5f5..988a32938ea13174726373c08cb4ddc0fe50d78f 100644
--- a/assign1.md
+++ b/assign1.md
@@ -125,7 +125,7 @@ You should also build `rotate2D`, which is a *generic* version of the above.
 
 ### Unit Tests
 Copy the following unit tests verbatim into your file
-`assign1Ttests.swift`. Do no change anything, as we will use the exact tests
+`assign1Tests.swift`. Do no change anything, as we will use the exact tests
 below to test your definitions in `model.swift`. 
 ```
     func testSetup() {