diff --git a/docs/mkdocs/docs/api/macros/nlohmann_define_derived_type.md b/docs/mkdocs/docs/api/macros/nlohmann_define_derived_type.md
index 9bb7ff8e7..e129a2693 100644
--- a/docs/mkdocs/docs/api/macros/nlohmann_define_derived_type.md
+++ b/docs/mkdocs/docs/api/macros/nlohmann_define_derived_type.md
@@ -40,7 +40,7 @@ The base type **must** be already serializable/deserializable.
 :   name of the base type (class, struct) `type` is derived from
 
 `member` (in)
-:   name of the member variable to serialize/deserialize; up to 64 members can be given as comma-separated list
+:   name of the member variable to serialize/deserialize; up to 63 members can be given as comma-separated list
 
 ## Default definition
 
diff --git a/docs/mkdocs/docs/api/macros/nlohmann_define_type_intrusive.md b/docs/mkdocs/docs/api/macros/nlohmann_define_type_intrusive.md
index ad425810a..81f6c8606 100644
--- a/docs/mkdocs/docs/api/macros/nlohmann_define_type_intrusive.md
+++ b/docs/mkdocs/docs/api/macros/nlohmann_define_type_intrusive.md
@@ -25,7 +25,7 @@ parameter is the name of the class/struct, and all remaining parameters name the
 :   name of the type (class, struct) to serialize/deserialize
 
 `member` (in)
-:   name of the member variable to serialize/deserialize; up to 64 members can be given as comma-separated list
+:   name of the member variable to serialize/deserialize; up to 63 members can be given as comma-separated list
 
 ## Default definition
 
@@ -50,8 +50,8 @@ See examples below for the concrete generated code.
 
 !!! warning "Implementation limits"
 
-    - The current implementation is limited to at most 64 member variables. If you want to serialize/deserialize types
-      with more than 64 member variables, you need to define the `to_json`/`from_json` functions manually.
+    - The current implementation is limited to at most 63 member variables. If you want to serialize/deserialize types
+      with more than 63 member variables, you need to define the `to_json`/`from_json` functions manually.
     - The macros only work for the [`nlohmann::json`](../json.md) type; other specializations such as
       [`nlohmann::ordered_json`](../ordered_json.md) are currently unsupported.
 
diff --git a/docs/mkdocs/docs/api/macros/nlohmann_define_type_non_intrusive.md b/docs/mkdocs/docs/api/macros/nlohmann_define_type_non_intrusive.md
index 5830f8ca9..149ca778d 100644
--- a/docs/mkdocs/docs/api/macros/nlohmann_define_type_non_intrusive.md
+++ b/docs/mkdocs/docs/api/macros/nlohmann_define_type_non_intrusive.md
@@ -25,7 +25,7 @@ parameter is the name of the class/struct, and all remaining parameters name the
 :   name of the type (class, struct) to serialize/deserialize
 
 `member` (in)
-:   name of the (public) member variable to serialize/deserialize; up to 64 members can be given as comma-separated list
+:   name of the (public) member variable to serialize/deserialize; up to 63 members can be given as comma-separated list
 
 ## Default definition
 
@@ -51,8 +51,8 @@ See examples below for the concrete generated code.
 
 !!! warning "Implementation limits"
 
-    - The current implementation is limited to at most 64 member variables. If you want to serialize/deserialize types
-      with more than 64 member variables, you need to define the `to_json`/`from_json` functions manually.
+    - The current implementation is limited to at most 63 member variables. If you want to serialize/deserialize types
+      with more than 63 member variables, you need to define the `to_json`/`from_json` functions manually.
     - The macros only work for the [`nlohmann::json`](../json.md) type; other specializations such as
       [`nlohmann::ordered_json`](../ordered_json.md) are currently unsupported.