diff --git a/libc/nt/nt/file.h b/libc/nt/nt/file.h
index 2fb214b79..051f3bae3 100644
--- a/libc/nt/nt/file.h
+++ b/libc/nt/nt/file.h
@@ -64,7 +64,7 @@ NtStatus NtWriteFile(int64_t FileHandle, void *opt_Event,
 NtStatus NtDuplicateObject(int64_t SourceProcessHandle, void *SourceHandle,
                            void *TargetProcessHandle,
                            void **opt_out_TargetHandle, uint32_t DesiredAcess,
-                           uint32_t Atrributes, uint32_t options_t);
+                           uint32_t Attributes, uint32_t options_t);
 
 NtStatus NtQueryInformationFile(int64_t FileHandle,
                                 struct NtIoStatusBlock *out_IoStatusBlock,