diff --git a/porting/npl/freertos/src/npl_os_freertos.c b/porting/npl/freertos/src/npl_os_freertos.c
index eeebe9fd7..a671a80ea 100644
--- a/porting/npl/freertos/src/npl_os_freertos.c
+++ b/porting/npl/freertos/src/npl_os_freertos.c
@@ -22,6 +22,7 @@
 #include <string.h>
 #include "nimble/nimble_npl.h"
 
+/* Include the file that defines the SCB for your HW. */
 #ifdef NIMBLE_NPL_OS_EXTRA_INCLUDE
 #include NIMBLE_NPL_OS_EXTRA_INCLUDE
 #endif