diff --git a/slides/intro/Local_Development_Workflow.md b/slides/intro/Local_Development_Workflow.md
index 648dfe18..206e8e3b 100644
--- a/slides/intro/Local_Development_Workflow.md
+++ b/slides/intro/Local_Development_Workflow.md
@@ -176,7 +176,7 @@ $ docker run -d -v $(pwd):/src -P namer
 
 * `namer` is the name of the image we will run.
 
-* We don't specify a command to run because is is already set in the Dockerfile.
+* We don't specify a command to run because it is already set in the Dockerfile.
 
 Note: on Windows, replace `$(pwd)` with `%cd%` (or `${pwd}` if you use PowerShell).