diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOM.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOM.java
index e91741d33b3..b92e606b8c8 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOM.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOM.java
@@ -85,7 +85,11 @@ public class PDOM extends PlatformObject
 	}
 	
 	public boolean versionMismatch() {
-		return db.getVersion() != VERSION;
+		if (db.getVersion() != VERSION) {
+			db.setVersion(VERSION);
+			return true;
+		} else
+			return false;
 	}
 
 	public Object getAdapter(Class adapter) {