diff --git a/modules/justpremiumBidAdapter.js b/modules/justpremiumBidAdapter.js
index 6e044c42640c..db15598a0e6f 100644
--- a/modules/justpremiumBidAdapter.js
+++ b/modules/justpremiumBidAdapter.js
@@ -72,7 +72,8 @@ export const spec = {
           cpm: bid.price,
           netRevenue: true,
           currency: bid.currency || 'USD',
-          ttl: bid.ttl || spec.time
+          ttl: bid.ttl || spec.time,
+          format: bid.format
         }
         bidResponses.push(bidResponse)
       }
diff --git a/test/spec/modules/justpremiumBidAdapter_spec.js b/test/spec/modules/justpremiumBidAdapter_spec.js
index 769810a3f3fb..17961f04c7b8 100644
--- a/test/spec/modules/justpremiumBidAdapter_spec.js
+++ b/test/spec/modules/justpremiumBidAdapter_spec.js
@@ -83,7 +83,8 @@ describe('justpremium adapter', () => {
           cpm: 0.52,
           netRevenue: true,
           currency: 'USD',
-          ttl: 60000
+          ttl: 60000,
+          format: 'lb'
         }
       ]
 
@@ -99,6 +100,7 @@ describe('justpremium adapter', () => {
       expect(result[0].ttl).to.equal(60000)
       expect(result[0].creativeId).to.equal(3213123)
       expect(result[0].netRevenue).to.equal(true)
+      expect(result[0].format).to.equal('lb')
     })
 
     it('Verify wrong server response', () => {