1 files changed, 6 insertions, 1 deletions
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/contexts/DebugContextSourceProvider.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/contexts/DebugContextSourceProvider.java
index d4a7b0752..57f07a8e7 100644
--- a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/contexts/DebugContextSourceProvider.java
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/contexts/DebugContextSourceProvider.java
@@ -59,7 +59,12 @@ public class DebugContextSourceProvider extends AbstractSourceProvider implement
         values.put(IDebugUIConstants.DEBUG_CONTEXT_SOURCE_NAME, event.getContext());
 		// make sure fireSourceChanged is called on the UI thread
 		if (Display.getCurrent() == null) {
-			DebugUIPlugin.getStandardDisplay().asyncExec(() -> fireSourceChanged(ISources.ACTIVE_CURRENT_SELECTION, values));
+			DebugUIPlugin.getStandardDisplay().asyncExec(new Runnable() {
+				@Override
+				public void run() {
+					fireSourceChanged(ISources.ACTIVE_CURRENT_SELECTION, values);
+				}
+			});
 		} else {
 			fireSourceChanged(ISources.ACTIVE_CURRENT_SELECTION, values);
 		}