diff --git a/src/hamcorebuilder/hamcorebuilder.c b/src/hamcorebuilder/hamcorebuilder.c
index c11546c6..d6f79fc1 100644
--- a/src/hamcorebuilder/hamcorebuilder.c
+++ b/src/hamcorebuilder/hamcorebuilder.c
@@ -136,8 +136,12 @@
 int main(int argc, char *argv[])
 {
 	MayaquaMinimalMode();
-#ifdef DEBUG
-	InitMayaqua(true, true, argc, argv);
+
+#if defined(_DEBUG) || defined(DEBUG)	// In VC++ compilers, the macro is "_DEBUG", not "DEBUG".
+	// If set memcheck = true, the program will be vitally slow since it will log all malloc() / realloc() / free() calls to find the cause of memory leak.
+	// For normal debug we set memcheck = false.
+	// Please set memcheck = true if you want to test the cause of memory leaks.
+	InitMayaqua(false, true, argc, argv);
 #else
 	InitMayaqua(false, false, argc, argv);
 #endif