diff --git a/examples/qwen2-audio/qwen2.cpp b/examples/qwen2-audio/qwen2.cpp
index 71b2a4a12..a42b85bdc 100644
--- a/examples/qwen2-audio/qwen2.cpp
+++ b/examples/qwen2-audio/qwen2.cpp
@@ -18,6 +18,7 @@
 #include <thread>
 #include <vector>
 #include <cstring>
+#include <iostream>
 
 //
 // Constants
@@ -708,6 +709,7 @@ void omni_free(struct omni_context *ctx_omni)
     if(internal_chars != nullptr)
     {
         free(internal_chars);
+        internal_chars = nullptr;
     }
     if (ctx_omni->ctx_whisper)
     {
@@ -716,7 +718,7 @@ void omni_free(struct omni_context *ctx_omni)
     }
     if (ctx_omni->projector)
     {
-        ctx_omni->projector->free();
+        delete ctx_omni->projector;
     }
 
     llama_free(ctx_omni->ctx_llama);