diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 2fb2138b61de..8d02ad89658e 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -24276,6 +24276,7 @@ with self; {
 
     checkPhase = ''
       patchShebangs ./t ./scripts/yath
+      export AUTOMATED_TESTING=1
       ./scripts/yath test -j $NIX_BUILD_CORES
     '';