diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/indexer/StandaloneIndexer.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/indexer/StandaloneIndexer.java
index 9cf6c388de7..256d41855d4 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/indexer/StandaloneIndexer.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/indexer/StandaloneIndexer.java
@@ -259,6 +259,11 @@ public abstract class StandaloneIndexer {
 		return fMapper;
 	}
 	
+	
+	public void setLanguageMapper(ILanguageMapper mapper) {
+		fMapper = mapper;
+	}
+	
 	/**
 	 * Returns the logger.
 	 */