--- a/configure
+++ b/configure
@@ -5766,7 +5766,7 @@
 fi
 
 
-ac_config_files="$ac_config_files Makefile include/Makefile src/Makefile src/tests/Makefile src/tests/properties/Makefile src/examples/cpp03/Makefile src/examples/cpp11/Makefile src/examples/cpp14/Makefile src/examples/cpp17/Makefile src/examples/cpp20/Makefile"
+ac_config_files="$ac_config_files Makefile include/Makefile src/Makefile src/tests/Makefile src/tests/properties/Makefile src/examples/cpp03/Makefile src/examples/cpp11/Makefile src/examples/cpp14/Makefile src/examples/cpp17/Makefile"
 
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure