diff --git a/legacy/efreet/configure.ac b/legacy/efreet/configure.ac
index 286f9a3444..e5d94c0614 100644
--- a/legacy/efreet/configure.ac
+++ b/legacy/efreet/configure.ac
@@ -3,7 +3,7 @@ rm -f config.cache
 
 AC_INIT([efreet], [0.5.0.063], [enlightenment-devel@lists.sourceforge.net])
 release="ver-pre-svn-05"
-# get rid of that stupid cache mechanismAC_PREREQ([2.52])
+AC_PREREQ([2.52])
 AC_CONFIG_SRCDIR([configure.ac])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CANONICAL_BUILD