diff --git a/src/libcmd/built-path.cc b/src/libcmd/built-path.cc
index cd4af20a1ed0..8e2efc7c31b5 100644
--- a/src/libcmd/built-path.cc
+++ b/src/libcmd/built-path.cc
@@ -58,21 +58,6 @@ StorePathSet BuiltPath::outPaths() const
     );
 }
 
-StorePaths BuiltPath::outPaths2() const
-{
-    return std::visit(
-        overloaded{
-            [](const BuiltPath::Opaque & p) { return StorePaths{p.path}; },
-            [](const BuiltPath::Built & b) {
-                StorePaths res;
-                for (auto & [_, path] : b.outputs)
-                    res.push_back(path);
-                return res;
-            },
-        }, raw()
-    );
-}
-
 SingleDerivedPath::Built SingleBuiltPath::Built::discardOutputPath() const
 {
     return SingleDerivedPath::Built {
diff --git a/src/libcmd/built-path.hh b/src/libcmd/built-path.hh
index 35cfa1466c20..99917e0eefba 100644
--- a/src/libcmd/built-path.hh
+++ b/src/libcmd/built-path.hh
@@ -87,7 +87,6 @@ struct BuiltPath : _BuiltPathRaw {
     }
 
     StorePathSet outPaths() const;
-    StorePaths outPaths2() const;
     RealisedPath::Set toRealisedPaths(Store & store) const;
 
     nlohmann::json toJSON(const StoreDirConfig & store) const;
diff --git a/src/libcmd/installables.cc b/src/libcmd/installables.cc
index f6acbc7c3fed..736c41a1eaeb 100644
--- a/src/libcmd/installables.cc
+++ b/src/libcmd/installables.cc
@@ -737,7 +737,7 @@ StorePaths Installable::toStorePaths(
 {
     StorePaths outPaths;
     for (auto & path : toBuiltPaths(evalStore, store, mode, operateOn, installables)) {
-        auto thisOutPaths = path.outPaths2();
+        auto thisOutPaths = path.outPaths();
         outPaths.insert(outPaths.end(), thisOutPaths.begin(), thisOutPaths.end());
     }
     return outPaths;