diff --git a/book/src/common_patterns/on_demand_inputs.md b/book/src/common_patterns/on_demand_inputs.md
index 94ab8df8..a109d3fb 100644
--- a/book/src/common_patterns/on_demand_inputs.md
+++ b/book/src/common_patterns/on_demand_inputs.md
@@ -12,7 +12,7 @@ That is, when someone requests the text of a file for the first time:
 3. Invalidate the cached file once the watcher sends a change notification.
 
 This is possible to achieve in salsa, using a derived query and `report_synthetic_read` and `invalidate` queries.
-The setup looks roughtly like this:
+The setup looks roughly like this:
 
 ```rust,ignore
 #[salsa::query_group(VfsDatabaseStorage)]
diff --git a/book/src/common_patterns/selection.md b/book/src/common_patterns/selection.md
index bb1e8137..9188b324 100644
--- a/book/src/common_patterns/selection.md
+++ b/book/src/common_patterns/selection.md
@@ -62,8 +62,8 @@ This will result in a dependency graph like so:
 request_text  -->  parse  -->  header -->  content_type  -->  (other queries)
 ``` 
 
-The advantage of this is that changes that only effect the "body" of
-only consume small parts of itthe request will
+The advantage of this is that changes that only effect the "body" or
+only consume small parts of the request will
 not require us to re-execute `content_type` at all. This would be particularly
 valuable if there are a lot of dependent headers.