diff --git a/core/vm/instructions.go b/core/vm/instructions.go
index 44d3e81a9c..307c8c4e42 100644
--- a/core/vm/instructions.go
+++ b/core/vm/instructions.go
@@ -513,7 +513,7 @@ func opSload(pc *uint64, evm *EVM, scope *ScopeContext) ([]byte, error) {
 	loc := scope.Stack.peek()
 	hash := common.Hash(loc.Bytes32())
 	val := evm.StateDB.GetState(scope.Contract.Address(), hash)
-	loc.SetBytes(val.Bytes())
+	loc.SetBytes32(val.Bytes())
 	return nil, nil
 }