diff --git a/libc/bionic/jemalloc.h b/libc/bionic/jemalloc.h
index b9a4e99..ef77c9c 100644
--- a/libc/bionic/jemalloc.h
+++ b/libc/bionic/jemalloc.h
@@ -30,7 +30,7 @@
 
 void* je_aligned_alloc_wrapper(size_t, size_t);
 int je_iterate(uintptr_t, size_t, void (*)(uintptr_t, size_t, void*), void*);
-int je_mallctl(const char *name, void *oldp, size_t *oldlenp, void *newp, size_t newlen);
+int je_mallctl(const char *name, void *oldp, size_t *oldlenp, void *newp, size_t newlen) __attribute__((nothrow));
 struct mallinfo je_mallinfo();
 void je_malloc_disable();
 void je_malloc_enable();