diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index 59e3aad6d..e62672717 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -10,6 +10,7 @@
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
+#include <filesystem>
 #include <future>
 #include <iostream>
 #include <mutex>
@@ -1688,13 +1689,17 @@ void setStackSize(size_t stackSize)
     #endif
 }
 
+#if __linux__
 static AutoCloseFD fdSavedMountNamespace;
+std::optional<std::filesystem::path> savedCwd;
+#endif
 
 void saveMountNamespace()
 {
 #if __linux__
     static std::once_flag done;
     std::call_once(done, []() {
+        savedCwd.emplace(std::filesystem::current_path());
         AutoCloseFD fd = open("/proc/self/ns/mnt", O_RDONLY);
         if (!fd)
             throw SysError("saving parent mount namespace");
@@ -1712,6 +1717,12 @@ void restoreMountNamespace()
     } catch (Error & e) {
         debug(e.msg());
     }
+    try {
+        if (savedCwd)
+            std::filesystem::current_path(*savedCwd);
+    } catch (std::filesystem::filesystem_error const &e) {
+        debug(e.what());
+    }
 #endif
 }