diff --git a/src/kpowersave.cpp b/src/kpowersave.cpp
index 1d42505..5b873cc 100644
--- a/src/kpowersave.cpp
+++ b/src/kpowersave.cpp
@@ -1262,7 +1262,7 @@ void kpowersave::_quit (){
 	kdDebugFuncIn(trace);
 
 	// set the KDE-Settings back to user default
-	if(getenv("KDE_FULL_SESSION")) {
+	if(getenv("TDE_FULL_SESSION")) {
 		// first try to call the KDE method via DCOP to reset, if not fall back
 		if (!display->resetKDEScreensaver()) {
 			settings->load_kde();
@@ -1800,7 +1800,7 @@ void kpowersave::setSchemeSettings(){
 		}
 
 	} // TODO: check if this really work !!!
-	else if(getenv("KDE_FULL_SESSION")) {
+	else if(getenv("TDE_FULL_SESSION")) {
 		// try to reset the complete screensaver settings. Ff this fail, use own methodes
 		if (!display->resetKDEScreensaver()) {
 			settings->load_kde();
@@ -1836,7 +1836,7 @@ void kpowersave::setSchemeSettings(){
 								      settings->powerOffAfter);
 		}
 	}
-	else  if(getenv("KDE_FULL_SESSION")){
+	else  if(getenv("TDE_FULL_SESSION")){
 		// try to reset the KDE screensaver/DPMS settings (if there are also
 		// no special screensaver settings) otherwise fall back and set values from files
 		if (!settings->specSsSettings && !display->resetKDEScreensaver()) {