1 files changed, 1 insertions, 3 deletions
diff --git a/src/libstore/pathlocks.cc b/src/libstore/pathlocks.cc
index eddf5bcbda65..d0a0f812e3d2 100644
--- a/src/libstore/pathlocks.cc
+++ b/src/libstore/pathlocks.cc
@@ -16,12 +16,10 @@ int openLockFile(const Path & path, bool create)
 {
     AutoCloseFD fd;
 
-    fd = open(path.c_str(), O_RDWR | (create ? O_CREAT : 0), 0600);
+    fd = open(path.c_str(), O_CLOEXEC | O_RDWR | (create ? O_CREAT : 0), 0600);
     if (fd == -1 && (create || errno != ENOENT))
         throw SysError(format("opening lock file ‘%1%’") % path);
 
-    closeOnExec(fd);
-
     return fd.borrow();
 }