5 files changed, 11 insertions, 3 deletions
diff --git a/src/core/hle/api_version.h b/src/core/hle/api_version.h
index 811732179..5e10a7ad9 100644
--- a/src/core/hle/api_version.h
+++ b/src/core/hle/api_version.h
@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#pragma once
+
 #include "common/common_types.h"
 
 // This file contains yuzu's HLE API version constants.
diff --git a/src/core/hle/service/mii/manager.h b/src/core/hle/service/mii/manager.h
index ec7efa5f7..8e048fc56 100644
--- a/src/core/hle/service/mii/manager.h
+++ b/src/core/hle/service/mii/manager.h
@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <array>
+#include <vector>
 #include "common/bit_field.h"
 #include "common/common_funcs.h"
 #include "common/uuid.h"
diff --git a/src/core/hle/service/service.cpp b/src/core/hle/service/service.cpp
index 4e1541630..663b83cd3 100644
--- a/src/core/hle/service/service.cpp
+++ b/src/core/hle/service/service.cpp
@@ -149,10 +149,10 @@ void ServiceFrameworkBase::ReportUnimplementedFunction(Kernel::HLERequestContext
     std::string function_name = info == nullptr ? fmt::format("{}", ctx.GetCommand()) : info->name;
 
     fmt::memory_buffer buf;
-    fmt::format_to(buf, "function '{}': port='{}' cmd_buf={{[0]=0x{:X}", function_name,
-                   service_name, cmd_buf[0]);
+    fmt::format_to(std::back_inserter(buf), "function '{}': port='{}' cmd_buf={{[0]=0x{:X}",
+                   function_name, service_name, cmd_buf[0]);
     for (int i = 1; i <= 8; ++i) {
-        fmt::format_to(buf, ", [{}]=0x{:X}", i, cmd_buf[i]);
+        fmt::format_to(std::back_inserter(buf), ", [{}]=0x{:X}", i, cmd_buf[i]);
     }
     buf.push_back('}');
 
diff --git a/src/core/hle/service/spl/spl_results.h b/src/core/hle/service/spl/spl_results.h
index 878fa91b7..a07c61409 100644
--- a/src/core/hle/service/spl/spl_results.h
+++ b/src/core/hle/service/spl/spl_results.h
@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#pragma once
+
 #include "core/hle/result.h"
 
 namespace Service::SPL {
diff --git a/src/core/hle/service/spl/spl_types.h b/src/core/hle/service/spl/spl_types.h
index 23c39f7ed..a654e7556 100644
--- a/src/core/hle/service/spl/spl_types.h
+++ b/src/core/hle/service/spl/spl_types.h
@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#pragma once
+
 #include <span>
 
 #include "common/bit_field.h"