diff --git a/ctxc/tracers/api.go b/ctxc/tracers/api.go
index b3ed8418cc..42cc89aa99 100644
--- a/ctxc/tracers/api.go
+++ b/ctxc/tracers/api.go
@@ -63,6 +63,8 @@ const (
 	defaultTracechainMemLimit = common.StorageSize(500 * 1024 * 1024)
 )
 
+var errTxNotFound = errors.New("transaction not found")
+
 // StateReleaseFunc is used to deallocate resources held by constructing a
 // historical state for tracing purposes.
 type StateReleaseFunc func()
@@ -807,10 +809,15 @@ func containsTx(block *types.Block, hash common.Hash) bool {
 // TraceTransaction returns the structured logs created during the execution of CVM
 // and returns them as a JSON object.
 func (api *API) TraceTransaction(ctx context.Context, hash common.Hash, config *TraceConfig) (interface{}, error) {
-	_, blockHash, blockNumber, index, err := api.backend.GetTransaction(ctx, hash)
+	tx, blockHash, blockNumber, index, err := api.backend.GetTransaction(ctx, hash)
 	if err != nil {
 		return nil, err
 	}
+
+	// Only mined txes are supported
+	if tx == nil {
+		return nil, errTxNotFound
+	}
 	// It shouldn't happen in practice.
 	if blockNumber == 0 {
 		return nil, errors.New("genesis is not traceable")