diff --git a/xybrid/xybrid.pro b/xybrid/xybrid.pro
index 53e1e3d..7dfd6fb 100644
--- a/xybrid/xybrid.pro
+++ b/xybrid/xybrid.pro
@@ -45,7 +45,6 @@ RESOURCES += res/resources.qrc
 freebsd-clang {
     DEFINES += WITH_BOOST
     LIBS += -lboost_math_tr1
-    QMAKE_CXXFLAGS += -std=g++17
 }
 
 macx: {