diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index bbe47781617e..7e75c1214b36 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -228,6 +228,11 @@ static inline struct osnoise_variables *this_cpu_osn_var(void)
 	return this_cpu_ptr(&per_cpu_osnoise_var);
 }
 
+/*
+ * Protect the interface.
+ */
+static struct mutex interface_lock;
+
 #ifdef CONFIG_TIMERLAT_TRACER
 /*
  * Runtime information for the timer mode.
@@ -252,11 +257,6 @@ static inline struct timerlat_variables *this_cpu_tmr_var(void)
 	return this_cpu_ptr(&per_cpu_timerlat_var);
 }
 
-/*
- * Protect the interface.
- */
-static struct mutex interface_lock;
-
 /*
  * tlat_var_reset - Reset the values of the given timerlat_variables
  */