diff --git a/vlib/builtin/cfns.c.v b/vlib/builtin/cfns.c.v
index 5f086d3b3d2ba6..67c646d07800a0 100644
--- a/vlib/builtin/cfns.c.v
+++ b/vlib/builtin/cfns.c.v
@@ -233,7 +233,7 @@ fn C.sysctl(name &int, namelen u32, oldp voidptr, oldlenp voidptr, newp voidptr,
 @[trusted]
 fn C._fileno(int) int
 
-type C.intptr_t = voidptr
+pub type C.intptr_t = voidptr
 
 fn C._get_osfhandle(fd int) C.intptr_t