diff --git a/sw/airborne/fms/libeknav/ins_qkf_predict.cpp b/sw/airborne/fms/libeknav/ins_qkf_predict.cpp
index 307f766425..0a55cfafe4 100644
--- a/sw/airborne/fms/libeknav/ins_qkf_predict.cpp
+++ b/sw/airborne/fms/libeknav/ins_qkf_predict.cpp
@@ -28,9 +28,9 @@
 
 #include "ins_qkf.hpp"
 #include "assertions.hpp"
-#include "timer.hpp"
 
 #ifdef TIME_OPS
+#include "timer.hpp"
 # include <iostream>
 #endif