diff --git a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/sourcelookup/MappingSourceContainer.java b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/sourcelookup/MappingSourceContainer.java
index 177ffc9b3e8..5a99042a30b 100644
--- a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/sourcelookup/MappingSourceContainer.java
+++ b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/sourcelookup/MappingSourceContainer.java
@@ -86,6 +86,7 @@ public class MappingSourceContainer extends AbstractSourceContainer {
 		for( int i = 0; i < containers.length; i++ ) {
 			ISourceContainer container = containers[i];
 			try {
+				container.init(this.getDirector());
 				Object[] objects = container.findSourceElements( name );
 				if ( objects.length > 0 ) {
 					if ( isFindDuplicates() && results != null ) {