diff --git a/libs/openFrameworksCompiled/project/msys2/config.msys2.default.mk b/libs/openFrameworksCompiled/project/msys2/config.msys2.default.mk
index bb5e17076c0..7b5709fcddc 100644
--- a/libs/openFrameworksCompiled/project/msys2/config.msys2.default.mk
+++ b/libs/openFrameworksCompiled/project/msys2/config.msys2.default.mk
@@ -27,7 +27,8 @@
 
 #MINGW_PREFIX ?= /mingw32
 MINGW_PREFIX ?= /mingw64
-PLATFORM_CFLAGS += -std=gnu++17 -DUNICODE -D_UNICODE
+PLATFORM_CXXFLAGS += -std=gnu++17
+PLATFORM_CFLAGS += -DUNICODE -D_UNICODE
 #PLATFORM_CFLAGS += -IC:/msys64/mingw32/include/gstreamer-1.0 -DOF_VIDEO_PLAYER_GSTREAMER
 
 CC = $(MINGW_PREFIX)/bin/gcc