diff --git a/oscar/oscar.pro b/oscar/oscar.pro
index 24a68f10..dc223c87 100644
--- a/oscar/oscar.pro
+++ b/oscar/oscar.pro
@@ -488,6 +488,10 @@ QMAKE_CXXFLAGS += -Werror
 # Make deprecation warnings just warnings
 QMAKE_CFLAGS += -Wno-error=deprecated-declarations
 QMAKE_CXXFLAGS += -Wno-error=deprecated-declarations
+
+# Make g++ more permissive
+QMAKE_CXXFLAGS += -fpermissive
+
 lessThan(QT_MAJOR_VERSION,5)|lessThan(QT_MINOR_VERSION,9) {
     QMAKE_CFLAGS += -Wno-error=strict-aliasing
     QMAKE_CXXFLAGS += -Wno-error=strict-aliasing