diff --git a/prover/db/db.go b/prover/db/db.go
index 5a1f4a175..a86ae9ae0 100644
--- a/prover/db/db.go
+++ b/prover/db/db.go
@@ -9,7 +9,7 @@ import (
 )
 
 var (
-	blockKeyPrefix = "block-"
+	blockKeyPrefix = "block"
 	separator      = "++"
 )
 
@@ -26,9 +26,8 @@ func BuildBlockKey(blockTimestamp uint64, blockNumber uint64) []byte {
 		[][]byte{
 			[]byte(blockKeyPrefix),
 			[]byte(strconv.Itoa(int(blockTimestamp))),
-			[]byte(separator),
 			[]byte(strconv.Itoa(int(blockNumber))),
-		}, []byte{})
+		}, []byte(separator))
 }
 
 // BuildBlockValue will build a block value for a signed block
diff --git a/prover/db/db_test.go b/prover/db/db_test.go
index 80f6f2caa..edbf0b98f 100644
--- a/prover/db/db_test.go
+++ b/prover/db/db_test.go
@@ -10,7 +10,7 @@ import (
 )
 
 func Test_BuildBlockKey(t *testing.T) {
-	assert.Equal(t, []byte("block-1++300"), BuildBlockKey(1, 300))
+	assert.Equal(t, []byte("block++1++300"), BuildBlockKey(1, 300))
 }
 
 func Test_BuildBlockValue(t *testing.T) {