diff --git a/lib/server.js b/lib/server.js
index dc2314cdf..31b5306e0 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -96,6 +96,10 @@ class Server extends KarmaEventEmitter {
 
     this.log.debug('Final config', util.inspect(config, false, /** depth **/ null))
 
+    if (!config.autoWatch && !config.singleRun) {
+      this.log.warn('`autowatch` and `singleRun` are both `false`. In order to execute tests use `karma run`.')
+    }
+
     let modules = [{
       helper: ['value', helper],
       logger: ['value', logger],