--- sflphone/daemon/src/audio/audiortp/audio_zrtp_session.cpp~	2013-03-04 23:58:53.984883309 +0200
+++ sflphone/daemon/src/audio/audiortp/audio_zrtp_session.cpp	2013-03-04 23:58:56.601890845 +0200
@@ -68,7 +68,7 @@
 
     DEBUG("xdg_config %s", xdg_config.c_str());
 
-    if (XDG_CACHE_HOME != NULL) {
+    if (getenv("XDG_CACHE_HOME") != NULL) {
         std::string xdg_env = std::string(XDG_CACHE_HOME) + zidFilename_;
         DEBUG("xdg_env %s", xdg_env.c_str());
         (xdg_env.length() > 0) ? zidCompleteFilename = xdg_env : zidCompleteFilename = xdg_config;