diff --git a/pkgs/by-name/fo/fosrl-newt/package.nix b/pkgs/by-name/fo/fosrl-newt/package.nix
index e0039207108e..fbd7b30bfa16 100644
--- a/pkgs/by-name/fo/fosrl-newt/package.nix
+++ b/pkgs/by-name/fo/fosrl-newt/package.nix
@@ -20,7 +20,7 @@ buildGoModule rec {
 
   postPatch = ''
     substituteInPlace main.go \
-      --replace-fail "replaceme" "${version}"
+      --replace-fail "version_replaceme" "${version}"
   '';
 
   nativeInstallCheckInputs = [ versionCheckHook ];