diff --git a/book/en/src/RTIC.png b/book/en/src/RTIC.png
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diff --git a/book/en/src/preface.md b/book/en/src/preface.md
index a58c2f34b2..2413edde6f 100644
--- a/book/en/src/preface.md
+++ b/book/en/src/preface.md
@@ -1,5 +1,5 @@
 <p align="center">
-  <img width="300" height="300" src="RTIC.png">
+  <img width="300" height="300" src="RTIC.svg">
 </p>
 
 <h1 align="center">Real-Time Interrupt-driven Concurrency</h1>