diff --git a/slides/intro/Dockerfile_Tips.md b/slides/intro/Dockerfile_Tips.md
index 556108ff..2226cea0 100644
--- a/slides/intro/Dockerfile_Tips.md
+++ b/slides/intro/Dockerfile_Tips.md
@@ -90,11 +90,11 @@ COPY <test data sets and fixtures>
 RUN <unit tests>
 FROM <baseimage>
 RUN <install dependencies>
-COPY <vcode>
+COPY <code>
 RUN <build code>
 CMD, EXPOSE ...
 ```
 
-* The build fails as soon as an instructions fails
+* The build fails as soon as an instruction fails
 * If `RUN <unit tests>` fails, the build doesn't produce an image
 * If it succeeds, it produces a clean image (without test libraries and data)