diff --git a/appveyor.yml b/appveyor.yml
index 915fe2ba1..243b81516 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -2,6 +2,7 @@ install:
   - set PATH=C:\msys64\usr\bin;%PATH%
   - bash -lc "curl -O http://repo.msys2.org/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz"
   - bash -lc "curl -O http://repo.msys2.org/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig"
+  - bash -lc "ls -l msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz{.sig,}"
   - bash -lc "pacman-key --verify msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz{.sig,}"
   - bash -lc "pacman -U msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz"
   - bash -lc "pacman --needed --noconfirm -Syu"