diff --git a/configure.ac b/configure.ac
index 0d5e862..893ac64 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_SRCDIR([src/Makefile.in])
 AM_INIT_AUTOMAKE
 
-VERSION=PACKAGE_VERSION
+VERSION=AC_PACKAGE_VERSION
 AC_SUBST(VERSION)
 
 # Program Checks