diff --git a/test/common/modsecurity_test.cc b/test/common/modsecurity_test.cc
index 5b63580f..22757191 100644
--- a/test/common/modsecurity_test.cc
+++ b/test/common/modsecurity_test.cc
@@ -46,7 +46,7 @@ std::string ModSecurityTest<T>::header() {
 }
 
 template <class T>
-bool ModSecurityTest<T>::load_test_json(std::string file) {
+bool ModSecurityTest<T>::load_test_json(const std::string &file) {
     char errbuf[1024];
     yajl_val node;
 
@@ -76,13 +76,12 @@ bool ModSecurityTest<T>::load_test_json(std::string file) {
         u->filename = file;
 
         if (this->count(u->filename + ":" + u->name) == 0) {
-            std::vector<T *> *vector = new std::vector<T *>;
-            vector->push_back(u);
+            auto vec = new std::vector<T *>;
+            vec->push_back(u);
             std::string filename(u->filename + ":" + u->name);
-            std::pair<std::string, std::vector<T*>*> a(filename, vector);
-            this->insert(a);
+            this->insert({filename, vec});
         } else {
-            std::vector<T *> *vec = this->at(u->filename + ":" + u->name);
+            auto vec = this->at(u->filename + ":" + u->name);
             vec->push_back(u);
         }
     }
@@ -95,7 +94,7 @@ bool ModSecurityTest<T>::load_test_json(std::string file) {
 
 template <class T>
 std::pair<std::string, std::vector<T *>>*
-ModSecurityTest<T>::load_tests(std::string path) {
+ModSecurityTest<T>::load_tests(const std::string &path) {
     DIR *dir;
     struct dirent *ent;
     struct stat buffer;
diff --git a/test/common/modsecurity_test.h b/test/common/modsecurity_test.h
index 83e06ab8..79a168f7 100644
--- a/test/common/modsecurity_test.h
+++ b/test/common/modsecurity_test.h
@@ -39,8 +39,8 @@ template <class T> class ModSecurityTest :
     std::string header();
     void cmd_options(int, char **);
     std::pair<std::string, std::vector<T *>>* load_tests();
-    std::pair<std::string, std::vector<T *>>* load_tests(std::string path);
-    bool load_test_json(std::string);
+    std::pair<std::string, std::vector<T *>>* load_tests(const std::string &path);
+    bool load_test_json(const std::string &file);
 
     std::string target;
     bool verbose = false;
diff --git a/test/cppcheck_suppressions.txt b/test/cppcheck_suppressions.txt
index 6668c6f2..15234c70 100644
--- a/test/cppcheck_suppressions.txt
+++ b/test/cppcheck_suppressions.txt
@@ -43,7 +43,6 @@ functionStatic:src/engine/lua.h:70
 functionStatic:src/engine/lua.h:71
 functionConst:src/utils/geo_lookup.h:49
 useInitializationList:src/operators/rbl.h:69
-constStatement:test/common/modsecurity_test.cc:82
 functionStatic:src/operators/geo_lookup.h:35
 duplicateBreak:src/operators/validate_utf8_encoding.cc
 syntaxError:src/transaction.cc:62
@@ -55,8 +54,6 @@ rethrowNoCurrentException:src/rule_with_actions.cc:127
 ctunullpointer:src/rule_with_actions.cc:244
 ctunullpointer:src/rule_with_operator.cc:135
 ctunullpointer:src/rule_with_operator.cc:95
-passedByValue:test/common/modsecurity_test.cc:49
-passedByValue:test/common/modsecurity_test.cc:98
 unreadVariable:src/rule_with_operator.cc:219
 
 uninitvar:src/operators/verify_cpf.cc:77