diff --git a/unit-four/lessons/5_deployment_and_testing.md b/unit-four/lessons/5_deployment_and_testing.md
index 14ced83..4ab5a92 100644
--- a/unit-four/lessons/5_deployment_and_testing.md
+++ b/unit-four/lessons/5_deployment_and_testing.md
@@ -2,7 +2,7 @@
 
 Next we can deploy and test our marketplace contract through the SUI CLI. 
 
-We create a simple `marketplace::widget` module so we can mint some items for us to list to help with test.
+We create a simple `marketplace::widget` module so we can mint some items for us to list to help with testing.
 
 ```rust
 module marketplace::widget {
@@ -28,7 +28,7 @@ This is basically the Hello World project from Unit One, but made even simpler.
 
 ## Deployment
 
-First we publish both the package with:
+Publish the package using:
 
 ```bash
     sui client publish --gas-budget 10000000
@@ -100,8 +100,6 @@ Export the object ID of the newly split `SUI` coin with balance `1`:
     export PAYMENT_ID=<object ID of the split 1 balance SUI coin>
 ```
 
-_Quiz: As an exercise, modify the marketplace contract to accept any payment that has enough balance to pay for the asking price, instead of requiring the exact amount._
-
 Now, let's buy back the item that we just listed:
 
 ```bash
@@ -118,4 +116,4 @@ Finally, we can claim our earnings by calling the `take_profits_and_keep` method
     sui client call --function take_profits_and_keep --module marketplace --package $PACKAGE_ID --args $MARKET_ID --type-args 0x2::sui::SUI --gas-budget 10000000
 ```
 
-This will reap the balance from the `payments` `Table` object and return its size to `0`. Verify this on the explorer. 
\ No newline at end of file
+This will reap the balance from the `payments` `Table` object and return its size to `0`. Verify this on the explorer.