diff --git a/include/system.h b/include/system.h
index a3eb984cb..f0b53fe3c 100644
--- a/include/system.h
+++ b/include/system.h
@@ -91,8 +91,8 @@ E int FDECL(srandom, (unsigned int));
 #endif
 #endif
 #else
-E long lrand48();
-E void srand48();
+E long NDECL(lrand48);
+E void FDECL(srand48, (long));
 #endif /* BSD || ULTRIX || RANDOM */
 
 #if !defined(BSD) || defined(ultrix)