diff --git a/sysdeps/managarm/generic/file.cpp b/sysdeps/managarm/generic/file.cpp
index 35c9ef295c..bc2063971c 100644
--- a/sysdeps/managarm/generic/file.cpp
+++ b/sysdeps/managarm/generic/file.cpp
@@ -1316,13 +1316,15 @@ int sys_signalfd_create(const sigset_t *masks, int flags, int *fd)  {
 }
 
 int sys_inotify_create(int flags, int *fd) {
-	__ensure(!(flags & ~(IN_CLOEXEC)));
+	__ensure(!(flags & ~(IN_CLOEXEC | IN_NONBLOCK)));
 
 	SignalGuard sguard;
 
 	uint32_t proto_flags = 0;
 	if(flags & IN_CLOEXEC)
 		proto_flags |= managarm::posix::OpenFlags::OF_CLOEXEC;
+	if(flags & IN_NONBLOCK)
+		proto_flags |= managarm::posix::OpenFlags::OF_NONBLOCK;
 
 	managarm::posix::InotifyCreateRequest<MemoryAllocator> req(getSysdepsAllocator());
 	req.set_flags(proto_flags);