diff --git a/configure.ac b/configure.ac
index cf96d6f..3a621bc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -102,13 +102,13 @@ bash_version=`$SH_PROG --version`
 [bash_major=`$SH_PROG -c 'echo ${BASH_VERSINFO[0]}'`]
 [bash_minor=`$SH_PROG -c 'echo ${BASH_VERSINFO[1]}'`]
 bash_5_or_greater=no
-case "${bash_major}.${bash_minor}" in
-  'OK_BASH_VERS' | '5.0' | '5.1')
+case "${bash_major}" in
+  '5')
     bash_5_or_greater=yes
     ;;
   *)
     AC_MSG_WARN([You have Bash $bash_version installed.])
-    AC_MSG_ERROR([This package is only known to work with Bash 5.0 or 5.1])
+    AC_MSG_ERROR([This package is only known to work with Bash 5])
     ;;
 esac