diff --git a/compiler/cpp/src/parse/t_enum.h b/compiler/cpp/src/parse/t_enum.h
index 59941e3..12b4ad8 100644
--- a/compiler/cpp/src/parse/t_enum.h
+++ b/compiler/cpp/src/parse/t_enum.h
@@ -31,13 +31,13 @@
 public:
   t_enum(t_program* program) : t_type(program) {}
 
-  void set_name(const std::string& name) { name_ = name; }
+  void set_name(const std::string &name) { name_ = name; }
 
   void append(t_enum_value* constant) { constants_.push_back(constant); }
 
   const std::vector<t_enum_value*>& get_constants() { return constants_; }
 
-  t_enum_value* get_constant_by_name(const std::string name) {
+  t_enum_value* get_constant_by_name(const std::string& name) {
     const std::vector<t_enum_value*>& enum_values = get_constants();
     std::vector<t_enum_value*>::const_iterator c_iter;
     for (c_iter = enum_values.begin(); c_iter != enum_values.end(); ++c_iter) {
diff --git a/compiler/cpp/src/parse/t_service.h b/compiler/cpp/src/parse/t_service.h
index 091403d..1f49972 100644
--- a/compiler/cpp/src/parse/t_service.h
+++ b/compiler/cpp/src/parse/t_service.h
@@ -39,7 +39,7 @@
 
   void add_function(t_function* func) {
     std::vector<t_function*>::const_iterator iter;
-    for (iter = functions_.begin(); iter != functions_.end(); iter++) {
+    for (iter = functions_.begin(); iter != functions_.end(); ++iter) {
       if (func->get_name() == (*iter)->get_name()) {
         throw "Function " + func->get_name() + " is already defined";
       }