diff --git a/pkgs/tools/virtualization/mkosi/default.nix b/pkgs/tools/virtualization/mkosi/default.nix
index 72188e8fcfcf..130b47a5c9d2 100644
--- a/pkgs/tools/virtualization/mkosi/default.nix
+++ b/pkgs/tools/virtualization/mkosi/default.nix
@@ -120,5 +120,7 @@ buildPythonApplication rec {
     mainProgram = "mkosi";
     maintainers = with maintainers; [ malt3 katexochen ];
     platforms = platforms.linux;
+    # `mkosi qemu` boot fails in the uefi shell, image isn't found.
+    broken = withQemu;
   };
 }