diff --git a/arch/sim/src/Makefile b/arch/sim/src/Makefile
index 5ae386c00b7..f4f6270660e 100644
--- a/arch/sim/src/Makefile
+++ b/arch/sim/src/Makefile
@@ -75,8 +75,10 @@ ifeq ($(CONFIG_SMP),y)
 endif
 
 ifeq ($(CONFIG_SCHED_INSTRUMENTATION),y)
+ifneq ($(CONFIG_SCHED_INSTRUMENTATION_BUFFER),y)
   CSRCS += up_schednote.c
 endif
+endif
 
 ifeq ($(CONFIG_DEV_CONSOLE),y)
   CSRCS += up_uartwait.c
diff --git a/arch/sim/src/up_schednote.c b/arch/sim/src/up_schednote.c
index 57c2ffe08a0..c15e465bae9 100644
--- a/arch/sim/src/up_schednote.c
+++ b/arch/sim/src/up_schednote.c
@@ -42,7 +42,8 @@
 #include <syslog.h>
 #include <nuttx/sched.h>
 
-#ifdef CONFIG_SCHED_INSTRUMENTATION
+#if defined(CONFIG_SCHED_INSTRUMENTATION) && \
+   !defined(CONFIG_SCHED_INSTRUMENTATION_BUFFER)
 
 /****************************************************************************
  * Public Functions
@@ -194,4 +195,4 @@ void sched_note_csection(FAR struct tcb_s *tcb, bool enter)
 }
 #endif
 
-#endif /* CONFIG_SCHED_INSTRUMENTATION */
+#endif /* CONFIG_SCHED_INSTRUMENTATION && !CONFIG_SCHED_INSTRUMENTATION_BUFFER */