diff --git a/app/src/processing/app/contrib/ContributionTab.java b/app/src/processing/app/contrib/ContributionTab.java
index d4623b02b..29f4d9093 100644
--- a/app/src/processing/app/contrib/ContributionTab.java
+++ b/app/src/processing/app/contrib/ContributionTab.java
@@ -373,6 +373,7 @@ public class ContributionTab {
 
       List<Library> libraries =
         new ArrayList<Library>(editor.getMode().contribLibraries);
+      libraries.addAll(editor.getMode().coreLibraries);
       contributions.addAll(libraries);
 
       //ArrayList<ToolContribution> tools = editor.contribTools;