diff --git a/php-xdebug.spec b/php-xdebug.spec
index 7572558..5433c2e 100644
--- a/php-xdebug.spec
+++ b/php-xdebug.spec
@@ -1,6 +1,7 @@
 %define php_majver %(php-config --version | cut -d. -f1-2)
+%define pkgver %(echo %version | tr '[:lower:]' '[:upper:]')
 Name:          php-xdebug
-Version:       2.2.5
+Version:       2.4.0rc4
 Release:       1mamba
 Summary:       A PHP extension for powerful debugging
 Group:         Applications/Development
@@ -35,10 +36,9 @@ Test client application for %{name}.
 %debug_package
 
 %prep
-%setup -q -c
+%setup -q -n xdebug-%{pkgver}
 
 %build
-cd xdebug-%{version}
 phpize
 %configure
 %make
@@ -49,7 +49,6 @@ cd debugclient
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-cd xdebug-%{version}
 %makeinstall INSTALL_ROOT=%{buildroot}
 
 cd debugclient
@@ -78,6 +77,9 @@ EOF
 %{_bindir}/debugclient
 
 %changelog
+* Wed Jan 27 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 2.4.0rc4-1mamba
+- update to 2.4.0rc4
+
 * Thu Sep 18 2014 Silvan Calarco <silvan.calarco@mambasoft.it> 2.2.5-1mamba
 - update to 2.2.5