diff --git a/blockindex/sgd_indexer.go b/blockindex/sgd_indexer.go
index 5fb1d31ecb..5bb73cbff4 100644
--- a/blockindex/sgd_indexer.go
+++ b/blockindex/sgd_indexer.go
@@ -444,6 +444,10 @@ func (sgd *sgdRegistry) CheckContract(ctx context.Context, contract string, heig
 	}
 	sgdIndex, err := sgd.getSGDIndex(addr.Bytes())
 	if err != nil {
+		// if the contract is not registered, return nil to prevent the evm from throwing error
+		if errors.Cause(err) == db.ErrNotExist || errors.Cause(err) == db.ErrBucketNotExist {
+			return nil, 0, false, nil
+		}
 		return nil, 0, false, err
 	}
 
diff --git a/blockindex/sgd_indexer_test.go b/blockindex/sgd_indexer_test.go
index 76e96f4401..da292eae1c 100644
--- a/blockindex/sgd_indexer_test.go
+++ b/blockindex/sgd_indexer_test.go
@@ -148,7 +148,7 @@ func TestNewSGDRegistry(t *testing.T) {
 			blk := createTestingBlock(builder, 4, h, exec, logs)
 			r.NoError(sgdRegistry.PutBlock(ctx, blk))
 			receiver, percentage, isApproved, err := sgdRegistry.CheckContract(ctx, registerAddress.String(), 4)
-			r.ErrorContains(err, "not exist in DB")
+			r.NoError(err)
 			r.Nil(receiver)
 			r.False(isApproved)
 			hh, err := sgdRegistry.Height()
diff --git a/e2etest/sgd_registry_test.go b/e2etest/sgd_registry_test.go
index efa2c05ebd..fb21a2bb5b 100644
--- a/e2etest/sgd_registry_test.go
+++ b/e2etest/sgd_registry_test.go
@@ -177,7 +177,6 @@ func TestSGDRegistry(t *testing.T) {
 				"c375c2ef0000000000000000000000005b38da6a701c568545dcfcb03fcb875f56beddc4",
 			},
 			checkContractExpect: checkContractExpectation{
-				errorContains:   "not exist in DB",
 				contractAddress: registerAddress.String(),
 			},
 		},
@@ -187,7 +186,6 @@ func TestSGDRegistry(t *testing.T) {
 				"07f7aafb0000000000000000000000005b38da6a701c568545dcfcb03fcb875f56beddc4",
 			},
 			checkContractExpect: checkContractExpectation{
-				errorContains:   "not exist in DB",
 				contractAddress: registerAddress.String(),
 			},
 		},
@@ -225,7 +223,6 @@ func TestSGDRegistry(t *testing.T) {
 				"07f7aafb0000000000000000000000005b38da6a701c568545dcfcb03fcb875f56beddc4",
 			},
 			checkContractExpect: checkContractExpectation{
-				errorContains:   "not exist in DB",
 				contractAddress: registerAddress.String(),
 			},
 		},