diff --git a/src/lib/settings/SourceGroupSettingsCxx.cpp b/src/lib/settings/SourceGroupSettingsCxx.cpp
index de1ee2da..7af10c6a 100644
--- a/src/lib/settings/SourceGroupSettingsCxx.cpp
+++ b/src/lib/settings/SourceGroupSettingsCxx.cpp
@@ -67,21 +67,12 @@ std::vector<std::string> SourceGroupSettingsCxx::getAvailableLanguageStandards()
 		standards.push_back("c++17");
 		standards.push_back("gnu++17");
 
-		standards.push_back("c++1z");
-		standards.push_back("gnu++1z");
-
 		standards.push_back("c++14");
 		standards.push_back("gnu++14");
 
-		standards.push_back("c++1y");
-		standards.push_back("gnu++1y");
-
 		standards.push_back("c++11");
 		standards.push_back("gnu++11");
 
-		standards.push_back("c++0x");
-		standards.push_back("gnu++0x");
-
 		standards.push_back("c++03");
 		standards.push_back("gnu++03");
 
@@ -94,18 +85,10 @@ std::vector<std::string> SourceGroupSettingsCxx::getAvailableLanguageStandards()
 		standards.push_back("gnu11");
 		standards.push_back("iso9899:2011");
 
-		standards.push_back("c1x");
-		standards.push_back("gnu1x");
-		standards.push_back("iso9899:201x");
-
 		standards.push_back("c99");
 		standards.push_back("gnu99");
 		standards.push_back("iso9899:1999");
 
-		standards.push_back("c9x");
-		standards.push_back("gnu9x");
-		standards.push_back("iso9899:199x");
-
 		standards.push_back("iso9899:199409");
 
 		standards.push_back("c90");