diff --git a/libc/arch-x86_64/syscalls/truncate.S b/libc/arch-x86_64/syscalls/truncate.S
index 2fe7a9d..6da3140 100644
--- a/libc/arch-x86_64/syscalls/truncate.S
+++ b/libc/arch-x86_64/syscalls/truncate.S
@@ -16,3 +16,6 @@
 1:
     ret
 END(truncate)
+
+    .globl _C_LABEL(truncate64)
+    .equ _C_LABEL(truncate64), _C_LABEL(truncate)