diff --git a/tests/src/unit-convenience.cpp b/tests/src/unit-convenience.cpp
index 34bbb02cf..6b50cba0a 100644
--- a/tests/src/unit-convenience.cpp
+++ b/tests/src/unit-convenience.cpp
@@ -55,7 +55,7 @@ struct alt_string_iter
         return *this;
     }
 
-    std::string impl{};
+    std::string impl{}; // NOLINT(readability-redundant-member-init)
 };
 
 struct alt_string_data
@@ -91,7 +91,7 @@ struct alt_string_data
         return *this;
     }
 
-    std::string impl{};
+    std::string impl{}; // NOLINT(readability-redundant-member-init)
 };
 
 void check_escaped(const char* original, const char* escaped = "", bool ensure_ascii = false);
diff --git a/tests/src/unit-regression2.cpp b/tests/src/unit-regression2.cpp
index fab9aae3b..59932d292 100644
--- a/tests/src/unit-regression2.cpp
+++ b/tests/src/unit-regression2.cpp
@@ -90,8 +90,8 @@ struct Data
         : a(std::move(a_))
         , b(std::move(b_))
     {}
-    std::string a{};
-    std::string b{};
+    std::string a{}; // NOLINT(readability-redundant-member-init)
+    std::string b{}; // NOLINT(readability-redundant-member-init)
 };
 
 void from_json(const json& j, Data& data);
@@ -240,7 +240,7 @@ struct for_3171_base // NOLINT(cppcoreguidelines-special-member-functions)
         j.at("str").get_to(str);
     }
 
-    std::string str{};
+    std::string str{}; // NOLINT(readability-redundant-member-init)
 };
 
 struct for_3171_derived : public for_3171_base
diff --git a/tests/src/unit-udt.cpp b/tests/src/unit-udt.cpp
index b8437def5..5b002efa2 100644
--- a/tests/src/unit-udt.cpp
+++ b/tests/src/unit-udt.cpp
@@ -343,7 +343,7 @@ namespace udt
 {
 struct legacy_type
 {
-    std::string number{};
+    std::string number{}; // NOLINT(readability-redundant-member-init)
     legacy_type() = default;
     legacy_type(std::string n) : number(std::move(n)) {}
 };
@@ -616,7 +616,7 @@ struct small_pod
 
 struct non_pod
 {
-    std::string s{};
+    std::string s{}; // NOLINT(readability-redundant-member-init)
     non_pod() = default;
     non_pod(std::string S) : s(std::move(S)) {}
 };
diff --git a/tests/src/unit-udt_macro.cpp b/tests/src/unit-udt_macro.cpp
index e2383f40d..04631a4dc 100644
--- a/tests/src/unit-udt_macro.cpp
+++ b/tests/src/unit-udt_macro.cpp
@@ -18,7 +18,7 @@ namespace persons
 class person_with_private_data
 {
   private:
-    std::string name{};
+    std::string name{}; // NOLINT(readability-redundant-member-init)
     int age = 0;
     json metadata = nullptr;
 
@@ -41,7 +41,7 @@ class person_with_private_data
 class person_with_private_data_2
 {
   private:
-    std::string name{};
+    std::string name{}; // NOLINT(readability-redundant-member-init)
     int age = 0;
     json metadata = nullptr;
 
@@ -77,7 +77,7 @@ class person_with_private_data_2
 class person_without_private_data_1
 {
   public:
-    std::string name{};
+    std::string name{}; // NOLINT(readability-redundant-member-init)
     int age = 0;
     json metadata = nullptr;
 
@@ -99,7 +99,7 @@ class person_without_private_data_1
 class person_without_private_data_2
 {
   public:
-    std::string name{};
+    std::string name{}; // NOLINT(readability-redundant-member-init)
     int age = 0;
     json metadata = nullptr;
 
@@ -121,7 +121,7 @@ NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(person_without_private_data_2, age, name, met
 class person_without_private_data_3
 {
   public:
-    std::string name{};
+    std::string name{}; // NOLINT(readability-redundant-member-init)
     int age = 0;
     json metadata = nullptr;