diff --git a/libc/tools/gensyscalls.py b/libc/tools/gensyscalls.py
index a525a98..558b004 100755
--- a/libc/tools/gensyscalls.py
+++ b/libc/tools/gensyscalls.py
@@ -93,7 +93,7 @@
     ret
 1:
     neg     a0, a0
-    j       __set_errno_internal
+    tail    __set_errno_internal
 END(%(func)s)
 """