diff --git a/vlib/os/os.c.v b/vlib/os/os.c.v
index 5c2cf11dfa..b1b1739455 100644
--- a/vlib/os/os.c.v
+++ b/vlib/os/os.c.v
@@ -716,11 +716,8 @@ pub fn executable() string {
 	}
 	$if freebsd {
 		bufsize := usize(max_path_buffer_size)
-		mib := [1, // CTL_KERN
-		 		14, // KERN_PROC
-		 		12, // KERN_PROC_PATHNAME
-		 		-1]
-		unsafe { C.sysctl(mib.data, mib.len, &result[0], &bufsize, 0, 0) }
+		mib := [C.CTL_KERN, C.KERN_PROC, C.KERN_PROC_PATHNAME, -1]!
+		unsafe { C.sysctl(&mib[0], mib.len, &result[0], &bufsize, 0, 0) }
 		res := unsafe { tos_clone(&result[0]) }
 		return res
 	}