diff --git a/components/engine/docs/man/Dockerfile.5.md b/components/engine/docs/man/Dockerfile.5.md
index 0ec54a8c9c..dc28d3e034 100644
--- a/components/engine/docs/man/Dockerfile.5.md
+++ b/components/engine/docs/man/Dockerfile.5.md
@@ -283,7 +283,7 @@ A Dockerfile is similar to a Makefile.
   instruction can be used any number of times in a Dockerfile, and will only affect
   subsequent commands.
 
-**WRKDIR**
+**WORKDIR**
   -- `WORKDIR /path/to/workdir`
   The **WORKDIR** instruction sets the working directory for the **RUN**, **CMD**,
   **ENTRYPOINT**, **COPY** and **ADD** Dockerfile commands that follow it. It can