diff --git a/src/main/java/eu/starsong/ghidra/GhydraMCPPlugin.java b/src/main/java/eu/starsong/ghidra/GhydraMCPPlugin.java
index 047176d..54c6e16 100644
--- a/src/main/java/eu/starsong/ghidra/GhydraMCPPlugin.java
+++ b/src/main/java/eu/starsong/ghidra/GhydraMCPPlugin.java
@@ -461,7 +461,8 @@ public class GhydraMCPPlugin extends Plugin implements ApplicationLevelPlugin {
                         resultObj.addProperty("function", "");
                         resultObj.addProperty("address", address);
                         
-                        response.addProperty("success", true);
+                        response.addProperty("success", false);
+                        response.addProperty("message", "Function not found");
                         response.add("result", resultObj);
                         response.addProperty("timestamp", System.currentTimeMillis());
                         response.addProperty("port", this.port);