diff --git a/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/plugins/CodeUI.java b/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/plugins/CodeUI.java
index e58257b66..ee8c91988 100644
--- a/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/plugins/CodeUI.java
+++ b/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/plugins/CodeUI.java
@@ -163,6 +163,8 @@ public class CodeUI extends JPanel {
         }
 
         /* Configure breakpoint menu options */
+        /* XXX TODO We should ask for the file specified in the firmware, not
+         * the actual file on disk. */
         Integer address =
           CodeUI.this.mote.getExecutableAddressOf(displayedFile, line);
         if (address == null) {