diff --git a/examples/device/cdc_msc_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h b/examples/device/cdc_msc_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
index efd527ed2..9bef9bbbf 100644
--- a/examples/device/cdc_msc_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
+++ b/examples/device/cdc_msc_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
@@ -42,8 +42,8 @@
  * See http://www.freertos.org/a00110.html.
  *----------------------------------------------------------*/
 
-// skip if is compiled with assembler
-#if !defined(__ASSEMBLER__) && !defined(__IASMARM__)
+// skip if included from IAR assembler
+#ifndef __IASMARM__
 
 // Include MCU header
 #include "bsp/board_mcu.h"
@@ -149,10 +149,10 @@
 
 #ifdef __RX__
 /* Renesas RX series */
-#define vSoftwareInterruptISR					INT_Excep_ICU_SWINT
-#define vTickISR								INT_Excep_CMT0_CMI0
-#define configPERIPHERAL_CLOCK_HZ				(configCPU_CLOCK_HZ/2)
-#define configKERNEL_INTERRUPT_PRIORITY			1
+#define vSoftwareInterruptISR					        INT_Excep_ICU_SWINT
+#define vTickISR								              INT_Excep_CMT0_CMI0
+#define configPERIPHERAL_CLOCK_HZ				      (configCPU_CLOCK_HZ/2)
+#define configKERNEL_INTERRUPT_PRIORITY			  1
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY	4
 
 #else
@@ -168,10 +168,19 @@
 #if defined(__NVIC_PRIO_BITS)
   // For Cortex-M specific: __NVIC_PRIO_BITS is defined in core_cmx.h
 	#define configPRIO_BITS       __NVIC_PRIO_BITS
+
 #elif defined(__ECLIC_INTCTLBITS)
   // RISC-V Bumblebee core from nuclei
   #define configPRIO_BITS       __ECLIC_INTCTLBITS
-#elif !defined(__ASSEMBLER__) && !defined(__IASMARM__)
+
+#elif defined(__IASMARM__)
+  // FIXME: IAR Assembler cannot include mcu header directly to get __NVIC_PRIO_BITS.
+  // Therefore we will hard coded it to minimum value of 2 to get pass ci build.
+  // IAR user must update this to correct value of the target MCU
+  #message "configPRIO_BITS is hard coded to 2 to pass IAR build only. User should update it per MCU"
+  #define configPRIO_BITS       2
+
+#else
   #error "FreeRTOS configPRIO_BITS to be defined"
 #endif
 
diff --git a/examples/device/hid_composite_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h b/examples/device/hid_composite_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
index efd527ed2..9bef9bbbf 100644
--- a/examples/device/hid_composite_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
+++ b/examples/device/hid_composite_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
@@ -42,8 +42,8 @@
  * See http://www.freertos.org/a00110.html.
  *----------------------------------------------------------*/
 
-// skip if is compiled with assembler
-#if !defined(__ASSEMBLER__) && !defined(__IASMARM__)
+// skip if included from IAR assembler
+#ifndef __IASMARM__
 
 // Include MCU header
 #include "bsp/board_mcu.h"
@@ -149,10 +149,10 @@
 
 #ifdef __RX__
 /* Renesas RX series */
-#define vSoftwareInterruptISR					INT_Excep_ICU_SWINT
-#define vTickISR								INT_Excep_CMT0_CMI0
-#define configPERIPHERAL_CLOCK_HZ				(configCPU_CLOCK_HZ/2)
-#define configKERNEL_INTERRUPT_PRIORITY			1
+#define vSoftwareInterruptISR					        INT_Excep_ICU_SWINT
+#define vTickISR								              INT_Excep_CMT0_CMI0
+#define configPERIPHERAL_CLOCK_HZ				      (configCPU_CLOCK_HZ/2)
+#define configKERNEL_INTERRUPT_PRIORITY			  1
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY	4
 
 #else
@@ -168,10 +168,19 @@
 #if defined(__NVIC_PRIO_BITS)
   // For Cortex-M specific: __NVIC_PRIO_BITS is defined in core_cmx.h
 	#define configPRIO_BITS       __NVIC_PRIO_BITS
+
 #elif defined(__ECLIC_INTCTLBITS)
   // RISC-V Bumblebee core from nuclei
   #define configPRIO_BITS       __ECLIC_INTCTLBITS
-#elif !defined(__ASSEMBLER__) && !defined(__IASMARM__)
+
+#elif defined(__IASMARM__)
+  // FIXME: IAR Assembler cannot include mcu header directly to get __NVIC_PRIO_BITS.
+  // Therefore we will hard coded it to minimum value of 2 to get pass ci build.
+  // IAR user must update this to correct value of the target MCU
+  #message "configPRIO_BITS is hard coded to 2 to pass IAR build only. User should update it per MCU"
+  #define configPRIO_BITS       2
+
+#else
   #error "FreeRTOS configPRIO_BITS to be defined"
 #endif
 
diff --git a/src/tusb_option.h b/src/tusb_option.h
index 67377b7ec..cf5b21c9c 100644
--- a/src/tusb_option.h
+++ b/src/tusb_option.h
@@ -27,9 +27,6 @@
 #ifndef _TUSB_OPTION_H_
 #define _TUSB_OPTION_H_
 
-// To avoid GCC compiler warnings when -pedantic option is used (strict ISO C)
-typedef int make_iso_compilers_happy;
-
 #include "common/tusb_compiler.h"
 
 #define TUSB_VERSION_MAJOR     0
@@ -435,6 +432,9 @@ typedef int make_iso_compilers_happy;
   #error Control Endpoint Max Packet Size cannot be larger than 64
 #endif
 
+// To avoid GCC compiler warnings when -pedantic option is used (strict ISO C)
+typedef int make_iso_compilers_happy;
+
 #endif /* _TUSB_OPTION_H_ */
 
 /** @} */