diff --git a/libc/include/sys/resource.h b/libc/include/sys/resource.h
index 9181125..ccb267d 100644
--- a/libc/include/sys/resource.h
+++ b/libc/include/sys/resource.h
@@ -41,6 +41,7 @@
 #define RLIM_SAVED_MAX RLIM_INFINITY
 
 typedef unsigned long rlim_t;
+typedef unsigned long long rlim64_t;
 
 int getrlimit(int __resource, struct rlimit* __limit);
 int setrlimit(int __resource, const struct rlimit* __limit);