diff --git a/configure.ac b/configure.ac
index 95234386e..e11c16461 100644
--- a/configure.ac
+++ b/configure.ac
@@ -354,12 +354,8 @@ AC_SUBST(CFG_CXXFLAGS_PROFILE)
 # gnu is required for Cygwin to compile verilated.h successfully
 #_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++20)
 #_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++20)
-case "$(which lsb_release 2>&1 > /dev/null && lsb_release -d)" in
-*Alpine*Linux* | *Arch*Linux* | *Ubuntu*22.04*)
 _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++17)
 _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++17)
-;;
-esac
 _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++14)
 _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++14)
 _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++11)