diff --git a/lib.nix b/lib.nix
index 381621a..1595a4b 100644
--- a/lib.nix
+++ b/lib.nix
@@ -34,7 +34,7 @@ rec {
 
   toBase64 = value:
     builtins.readFile
-      (pkgs.runCommand "value-to-b64" {} "echo '${value}' | ${pkgs.coreutils}/bin/base64 -w0 > $out");
+      (pkgs.runCommand "value-to-b64" {} "echo -n '${value}' | ${pkgs.coreutils}/bin/base64 -w0 > $out");
 
   exp = base: exp: foldr (value: acc: acc * base) 1 (range 1 exp);