diff --git a/configure b/configure
index dd327de24b..27dc084420 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 134126 .
+# From configure.ac Revision: 134539 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for asterisk 1.6.
 #
@@ -4041,7 +4041,7 @@ case "${host_os}" in
 
      *)
      ac_default_prefix=/usr
-     if test ${prefix} = '/usr'; then
+     if test ${prefix} = '/usr' || test ${prefix} = 'NONE'; then
         if test ${sysconfdir} = '${prefix}/etc'; then
            sysconfdir=/etc
         fi
diff --git a/configure.ac b/configure.ac
index f04afc6f60..33b40a2af4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -35,7 +35,7 @@ case "${host_os}" in
 
      *)
      ac_default_prefix=/usr
-     if test ${prefix} = '/usr'; then
+     if test ${prefix} = '/usr' || test ${prefix} = 'NONE'; then
         if test ${sysconfdir} = '${prefix}/etc'; then
            sysconfdir=/etc
         fi