diff --git a/include/nlohmann/detail/conversions/from_json.hpp b/include/nlohmann/detail/conversions/from_json.hpp
index f7dd044b7..ce37730c8 100644
--- a/include/nlohmann/detail/conversions/from_json.hpp
+++ b/include/nlohmann/detail/conversions/from_json.hpp
@@ -70,10 +70,9 @@ void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
                 val = std::numeric_limits<ArithmeticType>::quiet_NaN();
                 break;
             }
-            // [[fallthrough]];
             // LCOV_EXCL_STOP
+            JSON_HEDLEY_FALL_THROUGH;
         }
-
         case value_t::object:
         case value_t::array:
         case value_t::string:
@@ -377,10 +376,9 @@ void from_json(const BasicJsonType& j, ArithmeticType& val)
                 val = std::numeric_limits<ArithmeticType>::quiet_NaN();
                 break;
             }
-            // [[fallthrough]];
             // LCOV_EXCL_STOP
+            JSON_HEDLEY_FALL_THROUGH;
         }
-
         case value_t::object:
         case value_t::array:
         case value_t::string:
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index 2122a2d2d..6f3753cf3 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -3933,10 +3933,9 @@ void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
                 val = std::numeric_limits<ArithmeticType>::quiet_NaN();
                 break;
             }
-            // [[fallthrough]];
             // LCOV_EXCL_STOP
+            JSON_HEDLEY_FALL_THROUGH;
         }
-
         case value_t::object:
         case value_t::array:
         case value_t::string:
@@ -4240,10 +4239,9 @@ void from_json(const BasicJsonType& j, ArithmeticType& val)
                 val = std::numeric_limits<ArithmeticType>::quiet_NaN();
                 break;
             }
-            // [[fallthrough]];
             // LCOV_EXCL_STOP
+            JSON_HEDLEY_FALL_THROUGH;
         }
-
         case value_t::object:
         case value_t::array:
         case value_t::string: