diff --git a/src/libstore/indirect-root-store.cc b/src/libstore/indirect-root-store.cc
index 9da05778d..082a458ab 100644
--- a/src/libstore/indirect-root-store.cc
+++ b/src/libstore/indirect-root-store.cc
@@ -33,8 +33,9 @@ Path IndirectRootStore::addPermRoot(const StorePath & storePath, const Path & _g
 
     /* Don't clobber the link if it already exists and doesn't
        point to the Nix store. */
-    if (pathExists(gcRoot) && (!isLink(gcRoot) || !isInStore(readLink(gcRoot))))
+    if (pathExists(gcRoot) && (!std::filesystem::is_symlink(gcRoot) || !isInStore(readLink(gcRoot))))
         throw Error("cannot create symlink '%1%'; already exists", gcRoot);
+
     makeSymlink(gcRoot, printStorePath(storePath));
     addIndirectRoot(gcRoot);
 
diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc
index 008cc11e7..cefb5befd 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -54,7 +54,7 @@ Path Store::followLinksToStore(std::string_view _path) const
 {
     Path path = absPath(std::string(_path));
     while (!isInStore(path)) {
-        if (!isLink(path)) break;
+        if (!std::filesystem::is_symlink(path)) break;
         auto target = readLink(path);
         path = absPath(target, dirOf(path));
     }
diff --git a/src/libutil/file-system.cc b/src/libutil/file-system.cc
index 03f64edc7..47251dbd7 100644
--- a/src/libutil/file-system.cc
+++ b/src/libutil/file-system.cc
@@ -94,7 +94,7 @@ Path canonPath(PathView path, bool resolveSymlinks)
         path,
         [&followCount, &temp, maxFollow, resolveSymlinks]
         (std::string & result, std::string_view & remaining) {
-            if (resolveSymlinks && isLink(result)) {
+            if (resolveSymlinks && std::filesystem::is_symlink(result)) {
                 if (++followCount >= maxFollow)
                     throw Error("infinite symlink recursion in path '%0%'", remaining);
                 remaining = (temp = concatStrings(readLink(result), remaining));
@@ -222,12 +222,6 @@ Path readLink(const Path & path)
 }
 
 
-bool isLink(const Path & path)
-{
-    return getFileType(path) == fs::file_type::symlink;
-}
-
-
 std::vector<fs::directory_entry> readDirectory(const Path & path)
 {
     std::vector<fs::directory_entry> entries;
diff --git a/src/libutil/file-system.hh b/src/libutil/file-system.hh
index 40ed82f02..5a0688104 100644
--- a/src/libutil/file-system.hh
+++ b/src/libutil/file-system.hh
@@ -117,8 +117,6 @@ bool pathAccessible(const Path & path);
  */
 Path readLink(const Path & path);
 
-bool isLink(const Path & path);
-
 /**
  * Read the contents of a directory.  The entries `.` and `..` are
  * removed.
diff --git a/src/nix/config-check.cc b/src/nix/config-check.cc
index f23e36fb5..9575bf338 100644
--- a/src/nix/config-check.cc
+++ b/src/nix/config-check.cc
@@ -101,7 +101,7 @@ struct CmdConfigCheck : StoreCommand
                 Path userEnv = canonPath(profileDir, true);
 
                 if (store->isStorePath(userEnv) && hasSuffix(userEnv, "user-environment")) {
-                    while (profileDir.find("/profiles/") == std::string::npos && isLink(profileDir))
+                    while (profileDir.find("/profiles/") == std::string::npos && std::filesystem::is_symlink(profileDir))
                         profileDir = absPath(readLink(profileDir), dirOf(profileDir));
 
                     if (profileDir.find("/profiles/") == std::string::npos)
diff --git a/src/nix/upgrade-nix.cc b/src/nix/upgrade-nix.cc
index a64b6a56e..17d1edb97 100644
--- a/src/nix/upgrade-nix.cc
+++ b/src/nix/upgrade-nix.cc
@@ -121,7 +121,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
         Path profileDir = dirOf(where);
 
         // Resolve profile to /nix/var/nix/profiles/<name> link.
-        while (canonPath(profileDir).find("/profiles/") == std::string::npos && isLink(profileDir))
+        while (canonPath(profileDir).find("/profiles/") == std::string::npos && std::filesystem::is_symlink(profileDir))
             profileDir = readLink(profileDir);
 
         printInfo("found profile '%s'", profileDir);