diff --git a/config.mak.uname b/config.mak.uname
index 0e6ec505e1..bcc60b9c58 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -756,9 +756,7 @@ ifeq ($(uname_S),MINGW)
 	HAVE_LIBCHARSET_H = YesPlease
 	USE_GETTEXT_SCHEME = fallthrough
 	USE_LIBPCRE = YesPlease
-        ifneq (CLANGARM64,$(MSYSTEM))
-		USE_NED_ALLOCATOR = YesPlease
-        endif
+	USE_MIMALLOC = YesPlease
 	NO_PYTHON =
         ifeq (/mingw64,$(subst 32,64,$(subst clangarm,mingw,$(prefix))))
 		# Move system config into top-level /etc/