diff --git a/process/elasticproc/block/blockProcessor.go b/process/elasticproc/block/blockProcessor.go
index 5b9cbb93..a1541029 100644
--- a/process/elasticproc/block/blockProcessor.go
+++ b/process/elasticproc/block/blockProcessor.go
@@ -90,7 +90,7 @@ func (bp *blockProcessor) PrepareBlockForDB(obh *outport.OutportBlockWithHeader)
 		Hash:                  hex.EncodeToString(obh.BlockData.HeaderHash),
 		MiniBlocksHashes:      miniblocksHashes,
 		NotarizedBlocksHashes: obh.NotarizedHeadersHashes,
-		Proposer:              obh.LeaderIndex,
+		Proposer:              getLeaderIndex(obh),
 		ProposerBlsKey:        hex.EncodeToString(obh.LeaderBLSKey),
 		Validators:            obh.SignersIndexes,
 		PubKeyBitmap:          hex.EncodeToString(obh.Header.GetPubKeysBitmap()),
@@ -142,6 +142,18 @@ func (bp *blockProcessor) PrepareBlockForDB(obh *outport.OutportBlockWithHeader)
 	return elasticBlock, nil
 }
 
+func getLeaderIndex(obh *outport.OutportBlockWithHeader) uint64 {
+	if obh.BlockData.HeaderProof != nil {
+		return obh.LeaderIndex
+	}
+
+	if len(obh.SignersIndexes) > 0 {
+		return obh.SignersIndexes[0]
+	}
+
+	return 0
+}
+
 func addProofs(elasticBlock *data.Block, obh *outport.OutportBlockWithHeader) {
 	if obh.BlockData.HeaderProof != nil {
 		elasticBlock.Proof = proofToAPIProof(obh.BlockData.HeaderProof)