diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java
index dfc8db979d6..a322dc8578f 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java
@@ -142,8 +142,6 @@ public class PDOMManager implements IPDOMManager, IElementChangedListener {
     		if (indexerId == null)
     			// make it the default
     			indexerId = getDefaultIndexerId();
-    		
-    		setIndexerId(project, indexerId);
     	}
   	    return indexerId;
     }