diff --git a/src/libexpr/eval-settings.cc b/src/libexpr/eval-settings.cc
index 8fbe94aef..2676c7b80 100644
--- a/src/libexpr/eval-settings.cc
+++ b/src/libexpr/eval-settings.cc
@@ -90,7 +90,7 @@ std::string EvalSettings::resolvePseudoUrl(std::string_view url)
         warnOnce(haveWarned,
             "Channels are deprecated in favor of flakes in Determinate Nix. "
             "Instead of '%s', use '%s'. "
-            "For a guide on Nix flakes, see: https://zero-to-nix.com/. "
+            "For a guide on Nix flakes, see: https://zero-to-nix.com. "
             "For details and to offer feedback on the deprecation process, see: https://github.com/DeterminateSystems/nix-src/issues/34.",
             url, realUrl);
         return realUrl;