diff --git a/libc/private/bionic_fortify.h b/libc/private/bionic_fortify.h
index 3c3292e..df83360 100644
--- a/libc/private/bionic_fortify.h
+++ b/libc/private/bionic_fortify.h
@@ -35,7 +35,11 @@
 
 #include <async_safe/log.h>
 
-static inline __noreturn void __fortify_fatal(const char* fmt, ...) {
+//
+// LLVM can't inline variadic functions, and we don't want one definition of
+// this per #include in libc.so, so no `static`.
+//
+inline __noreturn __printflike(1, 2) void __fortify_fatal(const char* fmt, ...) {
   va_list args;
   va_start(args, fmt);
   async_safe_fatal_va_list("FORTIFY", fmt, args);
@@ -52,7 +56,7 @@
     __fortify_fatal("%s: file descriptor %d < 0", fn, fd);
   }
   if (__predict_false(fd >= FD_SETSIZE)) {
-    __fortify_fatal("%s: file descriptor %d >= FD_SETSIZE %zu", fn, fd, FD_SETSIZE);
+    __fortify_fatal("%s: file descriptor %d >= FD_SETSIZE %d", fn, fd, FD_SETSIZE);
   }
   if (__predict_false(set_size < sizeof(fd_set))) {
     __fortify_fatal("%s: set size %zu is too small to be an fd_set", fn, set_size);