diff --git a/langtools/src/jdk.jshell/share/classes/jdk/internal/jshell/tool/ConsoleIOContext.java b/langtools/src/jdk.jshell/share/classes/jdk/internal/jshell/tool/ConsoleIOContext.java
index fd5abdf9464..4f1cc573d71 100644
--- a/langtools/src/jdk.jshell/share/classes/jdk/internal/jshell/tool/ConsoleIOContext.java
+++ b/langtools/src/jdk.jshell/share/classes/jdk/internal/jshell/tool/ConsoleIOContext.java
@@ -97,6 +97,7 @@ class ConsoleIOContext extends IOContext {
             }
         });
         in.setBellEnabled(true);
+        in.setCopyPasteDetection(true);
         in.addCompleter(new Completer() {
             private String lastTest;
             private int lastCursor;