diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index 9bb769fc2..328548103 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -1095,16 +1095,9 @@ void killUser(uid_t uid)
 //////////////////////////////////////////////////////////////////////
 
 
-/* Wrapper around vfork to prevent the child process from clobbering
-   the caller's stack frame in the parent. */
-static pid_t doFork(bool allowVfork, std::function<void()> fun) __attribute__((noinline));
-static pid_t doFork(bool allowVfork, std::function<void()> fun)
+static pid_t doFork(std::function<void()> fun)
 {
-#ifdef __linux__
-    pid_t pid = allowVfork ? vfork() : fork();
-#else
     pid_t pid = fork();
-#endif
     if (pid != 0) return pid;
     fun();
     abort();
@@ -1124,8 +1117,7 @@ static int childEntry(void * arg)
 pid_t startProcess(std::function<void()> fun, const ProcessOptions & options)
 {
     std::function<void()> wrapper = [&]() {
-        if (!options.allowVfork)
-            logger = makeSimpleLogger();
+        logger = makeSimpleLogger();
         try {
 #if __linux__
             if (options.dieWithParent && prctl(PR_SET_PDEATHSIG, SIGKILL) == -1)
@@ -1162,7 +1154,7 @@ pid_t startProcess(std::function<void()> fun, const ProcessOptions & options)
         throw Error("clone flags are only supported on Linux");
         #endif
     } else
-        pid = doFork(options.allowVfork, wrapper);
+        pid = doFork(wrapper);
 
     if (pid == -1) throw SysError("unable to fork");
 
@@ -1226,10 +1218,6 @@ void runProgram2(const RunOptions & options)
     if (source) in.create();
 
     ProcessOptions processOptions;
-    // vfork implies that the environment of the main process and the fork will
-    // be shared (technically this is undefined, but in practice that's the
-    // case), so we can't use it if we alter the environment
-    processOptions.allowVfork = !options.environment;
 
     std::optional<Finally<std::function<void()>>> resumeLoggerDefer;
     if (options.isInteractive) {
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index ed4c8705a..34ac33349 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -413,7 +413,6 @@ struct ProcessOptions
     std::string errorPrefix = "";
     bool dieWithParent = true;
     bool runExitHandlers = false;
-    bool allowVfork = false;
     /**
      * use clone() with the specified flags (Linux only)
      */
diff --git a/src/nix/daemon.cc b/src/nix/daemon.cc
index 42ce3b996..4f9907ad7 100644
--- a/src/nix/daemon.cc
+++ b/src/nix/daemon.cc
@@ -347,7 +347,6 @@ static void daemonLoop(std::optional<TrustedFlag> forceTrustClientOpt)
             options.errorPrefix = "unexpected Nix daemon error: ";
             options.dieWithParent = false;
             options.runExitHandlers = true;
-            options.allowVfork = false;
             startProcess([&]() {
                 fdSocket = -1;