diff --git a/src/models/qwen4exp.cpp b/src/models/qwen4exp.cpp
index 13338f31b2..c438710995 100644
--- a/src/models/qwen4exp.cpp
+++ b/src/models/qwen4exp.cpp
@@ -1,4 +1,5 @@
 #include "models.h"
+#include "llama-impl.h"
 #include "llama-memory-hybrid-idx.h"
 #include "llama-memory-recurrent.h"