diff --git a/content/micropython/02.micropython-course/course/04.digital/03.digital.md b/content/micropython/02.micropython-course/course/04.digital/03.digital.md
index 8dcd3ab539..3d85611e5c 100644
--- a/content/micropython/02.micropython-course/course/04.digital/03.digital.md
+++ b/content/micropython/02.micropython-course/course/04.digital/03.digital.md
@@ -23,7 +23,7 @@ So how does digital signals work? Well, it is quite simple! In the case of the b
 For the LED, we can do sort of the reverse: we can write a HIGH / LOW state to it. If we connect the LED to a **digital pin** on the Arduino, we can therefore turn it on or off, by writing a **"1"** or **"0"** to it.
 
 <video loop autoplay>
-<source src="assets/button+led.mp4" type="video/mp4" />
+<source src="assets/button-led.mp4" type="video/mp4" />
 </video>
 
 ## Exercise 1: Read a Button
diff --git a/content/micropython/02.micropython-course/course/04.digital/assets/button+led.mp4 b/content/micropython/02.micropython-course/course/04.digital/assets/button-led.mp4
similarity index 100%
rename from content/micropython/02.micropython-course/course/04.digital/assets/button+led.mp4
rename to content/micropython/02.micropython-course/course/04.digital/assets/button-led.mp4
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