diff --git a/core/state_transition.go b/core/state_transition.go
index a605c03185..d441925b90 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -353,7 +353,7 @@ func (st *StateTransition) TransitionDb() (ret []byte, usedGas uint64, quotaUsed
 	gu := st.gasUsed()
 	if st.modelGas != nil && len(st.modelGas) > 0 { //pay ctx to the model authors by the model gas * current price
 		for addr, mgas := range st.modelGas {
-			if int64(mgas) <= 0 || mgas > params.MODEL_GAS_LIMIT {
+			if int64(mgas) <= 0 || mgas > params.MODEL_GAS_UP_LIMIT {
 				continue
 			}
 
diff --git a/core/vm/interpreter.go b/core/vm/interpreter.go
index 52ef269d86..7d1fb95985 100644
--- a/core/vm/interpreter.go
+++ b/core/vm/interpreter.go
@@ -248,9 +248,7 @@ func (in *CVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
 				if modelMeta.Gas == uint64(0) {
 					//modelMeta.SetGas(params.MODEL_GAS_LIMIT)
 					modelMeta.SetGas(0)
-				} else if modelMeta.Gas > params.MODEL_GAS_UP_LIMIT {
-					modelMeta.SetGas(params.MODEL_GAS_LIMIT)
-				} else if modelMeta.Gas < params.MODEL_GAS_LIMIT {
+				} else if modelMeta.Gas > params.MODEL_GAS_UP_LIMIT{
 					modelMeta.SetGas(params.MODEL_GAS_LIMIT)
 				} else if int64(modelMeta.Gas) < 0 {
 					modelMeta.SetGas(0)