diff --git a/src/basic/def.h b/src/basic/def.h
index 4d515c1..65ad659 100644
--- a/src/basic/def.h
+++ b/src/basic/def.h
@@ -75,3 +75,6 @@
                 _CONF_PATHS_SPLIT_USR(n))
 
 #define LONG_LINE_MAX (1U*1024U*1024U)
+
+#define HIGH_RLIMIT_NOFILE (256*1024)
+#define HIGH_RLIMIT_MEMLOCK (1024ULL*1024ULL*64ULL)
diff --git a/src/core/main.c b/src/core/main.c
index b8c1e56..d6550ea 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -1168,7 +1168,7 @@ static int bump_rlimit_memlock(struct rlimit *saved_rlimit) {
          * should normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's
          * bump the value high enough for the root user. */
 
-        r = setrlimit_closest(RLIMIT_MEMLOCK, &RLIMIT_MAKE_CONST(1024ULL*1024ULL*16ULL));
+        r = setrlimit_closest(RLIMIT_MEMLOCK, &RLIMIT_MAKE_CONST(HIGH_RLIMIT_MEMLOCK));
         if (r < 0)
                 return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");