diff --git a/scripts/build/companion_libs/340-picolibc.sh b/scripts/build/companion_libs/340-picolibc.sh
index 525497ae..cb96e716 100644
--- a/scripts/build/companion_libs/340-picolibc.sh
+++ b/scripts/build/companion_libs/340-picolibc.sh
@@ -40,6 +40,7 @@ do_cc_libstdcxx_picolibc()
         final_opts+=( "lang_list=c,c++" )
         final_opts+=( "build_step=libstdcxx" )
 	final_opts+=( "extra_config+=('--enable-stdio=stdio_pure')" )
+	final_opts+=( "extra_config+=('--disable-wchar_t')" )
 	if [ "${CT_LIBC_PICOLIBC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
 	    final_opts+=( "enable_optspace=yes" )
 	fi