diff --git a/common/chat.cpp b/common/chat.cpp
index 70827bbcf..2b17374d5 100644
--- a/common/chat.cpp
+++ b/common/chat.cpp
@@ -841,4 +841,4 @@ common_chat_msg common_chat_parse(const std::string & input, common_chat_format
         default:
             throw std::runtime_error("Unsupported format: " + common_chat_format_name(format));
     }
-}
\ No newline at end of file
+}
diff --git a/common/chat.hpp b/common/chat.hpp
index fdcc8ef90..ca165aa13 100644
--- a/common/chat.hpp
+++ b/common/chat.hpp
@@ -32,7 +32,7 @@ enum common_chat_format {
     COMMON_CHAT_FORMAT_FUNCTIONARY_V3_2,
     COMMON_CHAT_FORMAT_FUNCTIONARY_V3_1_LLAMA_3_1,
     COMMON_CHAT_FORMAT_HERMES_2_PRO,
-    
+
     COMMON_CHAT_FORMAT_COUNT, // Not a format, just the # formats
 };
 
diff --git a/examples/server/server.cpp b/examples/server/server.cpp
index ff254fa09..fbe16c57d 100644
--- a/examples/server/server.cpp
+++ b/examples/server/server.cpp
@@ -340,7 +340,7 @@ struct server_task {
         {
             auto it = data.find("chat_format");
             if (it != data.end()) {
-                params.oaicompat_chat_format = static_cast<common_chat_format>(it->get<u_int32_t>());
+                params.oaicompat_chat_format = static_cast<common_chat_format>(it->get<int>());
             } else {
                 params.oaicompat_chat_format = defaults.oaicompat_chat_format;
             }
diff --git a/examples/server/utils.hpp b/examples/server/utils.hpp
index c589d6d40..157df6a1e 100644
--- a/examples/server/utils.hpp
+++ b/examples/server/utils.hpp
@@ -643,7 +643,7 @@ static json oaicompat_completion_params_parse(
         inputs.json_schema = json_value(llama_params, "json_schema", json::object());
         auto chat_params = common_chat_params_init(tmpl, inputs);
 
-        llama_params["chat_format"] = static_cast<u_int32_t>(chat_params.format);
+        llama_params["chat_format"] = static_cast<int>(chat_params.format);
         llama_params["prompt"] = chat_params.prompt;
         llama_params["grammar"] = chat_params.grammar;
         llama_params["grammar_lazy"] = chat_params.grammar_lazy;