diff --git a/sakura_core/config/build_config.cpp b/sakura_core/config/build_config.cpp
index ed53aec770..82cff965b9 100644
--- a/sakura_core/config/build_config.cpp
+++ b/sakura_core/config/build_config.cpp
@@ -35,12 +35,12 @@ void* operator new[](size_t nSize)
 	return p;
 }
 
-void operator delete(void* p)
+void operator delete(void* p) noexcept
 {
 	::free(p);
 }
 
-void operator delete[](void* p)
+void operator delete[](void* p) noexcept
 {
 	::free(p);
 }
diff --git a/sakura_core/config/build_config.h b/sakura_core/config/build_config.h
index 089792962c..ac5a89e71b 100644
--- a/sakura_core/config/build_config.h
+++ b/sakura_core/config/build_config.h
@@ -67,7 +67,7 @@ static const bool UNICODE_BOOL=false;
 
 //newされた領域をわざと汚すかどうか (デバッグ用)
 #ifdef _DEBUG
-#define FILL_STRANGE_IN_NEW_MEMORY
+#    define FILL_STRANGE_IN_NEW_MEMORY
 #endif
 
 
@@ -95,8 +95,8 @@ static const bool UNICODE_BOOL=false;
 		#endif
 	#endif
 	void* operator new[](size_t nSize);
-	void operator delete(void* p);
-	void operator delete[](void* p);
+	void operator delete(void* p) noexcept;
+	void operator delete[](void* p) noexcept;
 #endif