diff --git a/services/github/github-last-commit.service.js b/services/github/github-last-commit.service.js
index e9a1fa588bd0407ad1b416903ec15c29fa6120b7..45b6840bf8e1a24c2784954ea5675521515c162c 100644
--- a/services/github/github-last-commit.service.js
+++ b/services/github/github-last-commit.service.js
@@ -22,6 +22,7 @@ const schema = Joi.array()
     }).required()
   )
   .required()
+  .min(1)
 
 const queryParamSchema = Joi.object({
   display_timestamp: Joi.string()