diff --git a/Casks/m1xxx.rb b/Casks/m1xxx.rb
index 3d0b02d..65f3042 100644
--- a/Casks/m1xxx.rb
+++ b/Casks/m1xxx.rb
@@ -7,6 +7,8 @@
   desc "Unofficial Mixxx build for Apple Silicon"
   homepage "https://github.com/fwcd/m1xxx"
 
+  conflicts_with cask: "mixxx"
+
   livecheck do
     url "https://github.com/fwcd/m1xxx/releases/latest"
     regex %r{tag/v([\w.-]+)}