diff --git a/projects/mupdf/project.yaml b/projects/mupdf/project.yaml
index 9009fc291..01526f52f 100644
--- a/projects/mupdf/project.yaml
+++ b/projects/mupdf/project.yaml
@@ -2,7 +2,6 @@ homepage: "https://www.mupdf.com"
 primary_contact: tor.andersson@artifex.com
 sanitizers:
   - address
-  - undefined
   - memory
 auto_ccs:
   - jonathan@titanous.com