diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/CProjectDescriptionManager.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/CProjectDescriptionManager.java
index bb41ff7be52..2e0824789a3 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/CProjectDescriptionManager.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/CProjectDescriptionManager.java
@@ -573,6 +573,7 @@ public class CProjectDescriptionManager {
 				if(convertedDes != null){
 ///					ICConfigurationDescription activeCfg = convertedDes.getActiveConfiguration();
 					checkHandleActiveCfgChange(convertedDes, null, eDes, new NullProgressMonitor());
+					des = convertedDes;
 //					if(activeCfg != null){
 //						checkBuildSystemChange(project, eDes, activeCfg.getBuildSystemId(), null, new NullProgressMonitor());
 //			//			if(convertedDes != null)