diff --git a/SortFilterProxyModel.pri b/SortFilterProxyModel.pri
index 22f7a83..d8a8e9b 100644
--- a/SortFilterProxyModel.pri
+++ b/SortFilterProxyModel.pri
@@ -1,4 +1,4 @@
-!contains( CONFIG, c\+\+1[14] ): warning("SortFilterProxyModel needs at least c++11, add CONFIG += c++11 to your .pro")
+!contains( CONFIG, c\+\+1[147] ): warning("SortFilterProxyModel needs at least c++11, add CONFIG += c++11 to your .pro")
 
 INCLUDEPATH += $$PWD