diff --git a/hw/bsp/mimxrt1020_evk/board.mk b/hw/bsp/mimxrt1020_evk/board.mk
index 5720da95..52148b68 100644
--- a/hw/bsp/mimxrt1020_evk/board.mk
+++ b/hw/bsp/mimxrt1020_evk/board.mk
@@ -11,7 +11,6 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_MIMXRT10XX
 
 # mcu driver cause following warnings
-#CFLAGS += -Wno-error=float-equal -Wno-error=nested-externs
 CFLAGS += -Wno-error=unused-parameter
 
 MCU_DIR = hw/mcu/nxp/sdk/devices/MIMXRT1021
diff --git a/hw/bsp/mimxrt1050_evkb/board.mk b/hw/bsp/mimxrt1050_evkb/board.mk
index de07cdb0..4b642085 100644
--- a/hw/bsp/mimxrt1050_evkb/board.mk
+++ b/hw/bsp/mimxrt1050_evkb/board.mk
@@ -11,7 +11,6 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_MIMXRT10XX
 
 # mcu driver cause following warnings
-#CFLAGS += -Wno-error=float-equal -Wno-error=nested-externs
 CFLAGS += -Wno-error=unused-parameter
 
 MCU_DIR = hw/mcu/nxp/sdk/devices/MIMXRT1052
diff --git a/hw/bsp/mimxrt1060_evk/board.mk b/hw/bsp/mimxrt1060_evk/board.mk
index 2f6d0f7a..fae0ad0a 100644
--- a/hw/bsp/mimxrt1060_evk/board.mk
+++ b/hw/bsp/mimxrt1060_evk/board.mk
@@ -11,7 +11,6 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_MIMXRT10XX
 
 # mcu driver cause following warnings
-#CFLAGS += -Wno-error=float-equal -Wno-error=nested-externs
 CFLAGS += -Wno-error=unused-parameter
 
 MCU_DIR = hw/mcu/nxp/sdk/devices/MIMXRT1062
diff --git a/hw/bsp/mimxrt1064_evk/board.mk b/hw/bsp/mimxrt1064_evk/board.mk
index 6ebf2327..d8a89244 100644
--- a/hw/bsp/mimxrt1064_evk/board.mk
+++ b/hw/bsp/mimxrt1064_evk/board.mk
@@ -11,7 +11,6 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_MIMXRT10XX
 
 # mcu driver cause following warnings
-#CFLAGS += -Wno-error=float-equal -Wno-error=nested-externs
 CFLAGS += -Wno-error=unused-parameter
 
 MCU_DIR = hw/mcu/nxp/sdk/devices/MIMXRT1064
diff --git a/hw/bsp/teensy_40/board.mk b/hw/bsp/teensy_40/board.mk
index 6ec04a47..0a19fe63 100644
--- a/hw/bsp/teensy_40/board.mk
+++ b/hw/bsp/teensy_40/board.mk
@@ -11,7 +11,6 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_MIMXRT10XX
 
 # mcu driver cause following warnings
-#CFLAGS += -Wno-error=float-equal -Wno-error=nested-externs
 CFLAGS += -Wno-error=unused-parameter
 
 MCU_DIR = hw/mcu/nxp/sdk/devices/MIMXRT1062