diff --git a/kernel/src/sys/open.cpp b/kernel/src/sys/open.cpp
index b464daab..c85dfdb9 100644
--- a/kernel/src/sys/open.cpp
+++ b/kernel/src/sys/open.cpp
@@ -23,7 +23,10 @@ Result<u64> sys_openat(Registers*, SyscallArgs args)
     // Caller did not pass either O_RDONLY, O_WRONLY or O_RDWR
     if ((flags & O_RDWR) == 0) { return err(EINVAL); }
 
-    if ((flags & O_DIRECTORY) & (flags & O_CREAT)) return err(EINVAL);
+    if (flags & O_DIRECTORY)
+    {
+        if ((flags & O_WRONLY) || (flags & O_CREAT)) return err(EINVAL);
+    }
 
     int error;
     SharedPtr<VFS::Inode> parent_inode;