diff --git a/hw/bsp/broadcom_32bit/family.cmake b/hw/bsp/broadcom_32bit/family.cmake
index 5e57d8b1e..f1e8d12ff 100644
--- a/hw/bsp/broadcom_32bit/family.cmake
+++ b/hw/bsp/broadcom_32bit/family.cmake
@@ -42,7 +42,7 @@ function(add_board_target BOARD_TARGET)
     -ffreestanding
     -mgeneral-regs-only
     -fno-exceptions
-    -std=c17
+    -std=gnu17
     )
   target_include_directories(${BOARD_TARGET} PUBLIC
     ${SDK_DIR}
diff --git a/hw/bsp/broadcom_32bit/family.mk b/hw/bsp/broadcom_32bit/family.mk
index a282e9961..6acdf1197 100644
--- a/hw/bsp/broadcom_32bit/family.mk
+++ b/hw/bsp/broadcom_32bit/family.mk
@@ -10,7 +10,7 @@ CFLAGS += \
 	-nostartfiles \
 	-mgeneral-regs-only \
 	-fno-exceptions \
-	-std=c17
+	-std=gnu17
 
 CROSS_COMPILE = arm-none-eabi-
 
diff --git a/hw/bsp/broadcom_64bit/family.cmake b/hw/bsp/broadcom_64bit/family.cmake
index 1a088c2c0..16f8e1eae 100644
--- a/hw/bsp/broadcom_64bit/family.cmake
+++ b/hw/bsp/broadcom_64bit/family.cmake
@@ -43,7 +43,7 @@ function(add_board_target BOARD_TARGET)
     -ffreestanding
     -mgeneral-regs-only
     -fno-exceptions
-    -std=c17
+    -std=gnu17
     )
   target_compile_definitions(${BOARD_TARGET} PUBLIC
     BCM_VERSION=${BCM_VERSION}
diff --git a/hw/bsp/broadcom_64bit/family.mk b/hw/bsp/broadcom_64bit/family.mk
index 37d381f9f..92b5f69a3 100644
--- a/hw/bsp/broadcom_64bit/family.mk
+++ b/hw/bsp/broadcom_64bit/family.mk
@@ -9,7 +9,7 @@ CFLAGS += \
 	-nostartfiles \
 	--specs=nosys.specs \
 	-mgeneral-regs-only \
-	-std=c17
+	-std=gnu17
 
 CROSS_COMPILE = aarch64-none-elf-