diff --git a/README.md b/README.md
index 467aa4f1..8b8ef4f0 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ The tech carbon estimator is a web component that allow you to estimate, at high
 
 exposed as a web component `tech-carbon-estimator`. The component takes the follow optional input:
 
-- `extra-height` - this is extra height to be added whe calculating the height if the chart. eg a header/footer that will be visible on the page
+- `extra-height` - this is extra height to be taken into account when calculating the height of the chart. eg a header/footer that will be visible on the page.
 
 You will need to import the following files to use the tech-carbon-estimator: