diff --git a/README.md b/README.md
index b9ebd3b..9fcd869 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 Design files for a DIY fan controller that acts based on the main heat contributors' fan speeds.
 
-<img src="https://git.lukasschwarz.org/lukas/fancontroller/media/branch/master/case.jpg" width="40%">
+<img src="https://git.lukasschwarz.org/lukas/fancontroller/media/branch/master/case.jpg" width="40%" alt="Picture of the fan controller enclosure inside the PC case.">
 
 [Link to the more detailed article](https://lukasschwarz.org/projects/fan-controller/)