diff --git a/dnscrypt-proxy/config.go b/dnscrypt-proxy/config.go
index b141ee42..b88c1eb1 100644
--- a/dnscrypt-proxy/config.go
+++ b/dnscrypt-proxy/config.go
@@ -894,9 +894,8 @@ func (config *Config) loadSource(proxy *Proxy, cfgSourceName string, cfgSource *
 	}
 	if cfgSource.RefreshDelay <= 0 {
 		cfgSource.RefreshDelay = 72
-	} else if cfgSource.RefreshDelay > 168 {
-		cfgSource.RefreshDelay = 168
 	}
+	cfgSource.RefreshDelay = Min(168, Max(24, cfgSource.RefreshDelay))
 	source, err := NewSource(
 		cfgSourceName,
 		proxy.xTransport,