diff --git a/modules/installer/cd-dvd/system-tarball-pc.nix b/modules/installer/cd-dvd/system-tarball-pc.nix
index e98a8c215f9b..1046786c6dfb 100644
--- a/modules/installer/cd-dvd/system-tarball-pc.nix
+++ b/modules/installer/cd-dvd/system-tarball-pc.nix
@@ -60,7 +60,7 @@ let
     }
   '';
 
-  readme = builtins.readFile ./system-tarball-pc-readme.txt;
+  readme = ./system-tarball-pc-readme.txt;
 
 in