diff --git a/xmake.lua b/xmake.lua
index 56439a9..e02a4ff 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -36,13 +36,16 @@ elseif is_plat("mingw") then
 	add_ldflags("-Wa,-mbig-obj")
 end
 
-if is_mode("asan", "tsan", "ubsan") then
+if is_mode("debug") then
+	set_runtimes("MTd")
+elseif is_mode("asan", "tsan", "ubsan") then
 	set_optimize("none") -- by default xmake will optimize asan builds
 elseif is_mode("coverage") then
 	if not is_plat("windows") then
 		add_links("gcov")
 	end
 elseif is_mode("releasedbg") then
+	set_runtimes("MT")
 	set_fpmodels("fast")
 	add_vectorexts("sse", "sse2", "sse3", "ssse3")
 end