diff --git a/include/ircd/fs/fd.h b/include/ircd/fs/fd.h
index 7d591430e..c561e1e32 100644
--- a/include/ircd/fs/fd.h
+++ b/include/ircd/fs/fd.h
@@ -66,6 +66,6 @@ struct ircd::fs::fd::opts
 	bool nocreate {false};
 
 	/// Construct options from an std::ios::open_mode bitmask.
-	opts(const std::ios::open_mode &);
+	opts(const std::ios::openmode &);
 	opts() = default;
 };
diff --git a/ircd/db.cc b/ircd/db.cc
index 172a82e4d..70942e3be 100644
--- a/ircd/db.cc
+++ b/ircd/db.cc
@@ -3461,8 +3461,8 @@ try
 {
 	fs::fd::opts ret
 	{
-		std::ios_base::out |
-		(trunc? std::ios::trunc : 0)
+		std::ios::out |
+		(trunc? std::ios::trunc : std::ios::openmode(0))
 	};
 
 	ret.direct = this->env_opts.use_direct_writes;
diff --git a/ircd/fs.cc b/ircd/fs.cc
index 7525eaa3e..d23dc18ec 100644
--- a/ircd/fs.cc
+++ b/ircd/fs.cc
@@ -553,7 +553,7 @@ namespace ircd::fs
 {
 	thread_local char path_buf[PATH_MAX];
 	static const char *path_str(const string_view &);
-	static uint posix_flags(const std::ios::open_mode &mode);
+	static uint posix_flags(const std::ios::openmode &mode);
 }
 
 #ifdef HAVE_SYS_STAT_H
@@ -612,7 +612,7 @@ ircd::fs::size(const fd &fd)
 }
 
 uint
-ircd::fs::posix_flags(const std::ios::open_mode &mode)
+ircd::fs::posix_flags(const std::ios::openmode &mode)
 {
 	static const auto rdwr
 	{
@@ -644,7 +644,7 @@ ircd::fs::path_str(const string_view &s)
 // fd::opts
 //
 
-ircd::fs::fd::opts::opts(const std::ios::open_mode &mode)
+ircd::fs::fd::opts::opts(const std::ios::openmode &mode)
 :flags
 {
 	posix_flags(mode)