diff --git a/doc/debian8.5-step-by-step.md b/doc/debian8.5-step-by-step.md
index 0c37ca2..9426c62 100644
--- a/doc/debian8.5-step-by-step.md
+++ b/doc/debian8.5-step-by-step.md
@@ -98,7 +98,7 @@ If you use your package manager, you will install an old version of redis and yo
 Let's make a build directory:
 
 ```
-# mkdir /opt/redis-build && /opt/redis-build
+# mkdir /opt/redis-build && cd /opt/redis-build
 ```
 
 Download the stable ball: