diff --git a/examples/first-docker-file/Dockerfile b/examples/first-docker-file/Dockerfile
index c154e857..b7d0227c 100644
--- a/examples/first-docker-file/Dockerfile
+++ b/examples/first-docker-file/Dockerfile
@@ -10,7 +10,7 @@ COPY . /app
 RUN apt-get update && apt-get install -y python3 python3-pip
 
 # Set environment variables
-ENV NAME World
+ENV NAME=World
 
 # Run a command to start the application
 CMD ["python3", "app.py"]