diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/EnvironmentTab.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/EnvironmentTab.java
index 175be00e0b0..f7121612144 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/EnvironmentTab.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/EnvironmentTab.java
@@ -593,6 +593,7 @@ public class EnvironmentTab extends AbstractCPropertyTab {
 		}
 		vars = null;
 		super.performOK();
+		updateData();
 	}
 
 	@Override