diff --git a/modules/security/pki/default.nix b/modules/security/pki/default.nix
index 0c59abb25..a29e7f5dd 100644
--- a/modules/security/pki/default.nix
+++ b/modules/security/pki/default.nix
@@ -17,7 +17,7 @@ let
     }
     ''
       echo $files
-      cat "$files" > $out
+      cat $files > $out
     '';
 in