3 files changed, 10 insertions, 5 deletions

diff --git a/quantum/split_common/split_util.c b/quantum/split_common/split_util.c
index 9af3c29d75..59b6009ec4 100644
--- a/quantum/split_common/split_util.c
+++ b/quantum/split_common/split_util.c
@@ -13,6 +13,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
+
+#include "compiler_support.h"
 #include "split_util.h"
 #include "matrix.h"
 #include "keyboard.h"
@@ -62,7 +64,7 @@ static struct {
 } split_config;
 
 #if defined(SPLIT_USB_DETECT)
-_Static_assert((SPLIT_USB_TIMEOUT / SPLIT_USB_TIMEOUT_POLL) <= UINT16_MAX, "Please lower SPLIT_USB_TIMEOUT and/or increase SPLIT_USB_TIMEOUT_POLL.");
+STATIC_ASSERT((SPLIT_USB_TIMEOUT / SPLIT_USB_TIMEOUT_POLL) <= UINT16_MAX, "Please lower SPLIT_USB_TIMEOUT and/or increase SPLIT_USB_TIMEOUT_POLL.");
 static bool usb_bus_detected(void) {
     for (uint16_t i = 0; i < (SPLIT_USB_TIMEOUT / SPLIT_USB_TIMEOUT_POLL); i++) {
         // This will return true if a USB connection has been established
@@ -88,9 +90,9 @@ static inline bool usb_bus_detected(void) {
 #        endif
 #    endif
 #    if defined(SPLIT_USB_DETECT)
-_Static_assert(SPLIT_USB_TIMEOUT < SPLIT_WATCHDOG_TIMEOUT, "SPLIT_WATCHDOG_TIMEOUT should not be below SPLIT_USB_TIMEOUT.");
+STATIC_ASSERT(SPLIT_USB_TIMEOUT < SPLIT_WATCHDOG_TIMEOUT, "SPLIT_WATCHDOG_TIMEOUT should not be below SPLIT_USB_TIMEOUT.");
 #    endif
-_Static_assert(SPLIT_MAX_CONNECTION_ERRORS > 0, "SPLIT_WATCHDOG_ENABLE requires SPLIT_MAX_CONNECTION_ERRORS be above 0 for a functioning disconnection check.");
+STATIC_ASSERT(SPLIT_MAX_CONNECTION_ERRORS > 0, "SPLIT_WATCHDOG_ENABLE requires SPLIT_MAX_CONNECTION_ERRORS be above 0 for a functioning disconnection check.");
 
 static uint32_t split_watchdog_started = 0;
 static bool     split_watchdog_done    = false;
diff --git a/quantum/split_common/transaction_id_define.h b/quantum/split_common/transaction_id_define.h
index 5bfbe2aec7..694737868a 100644
--- a/quantum/split_common/transaction_id_define.h
+++ b/quantum/split_common/transaction_id_define.h
@@ -16,6 +16,8 @@
 
 #pragma once
 
+#include "compiler_support.h"
+
 enum serial_transaction_id {
 #ifdef USE_I2C
     I2C_EXECUTE_CALLBACK,
@@ -122,4 +124,4 @@ enum serial_transaction_id {
 };
 
 // Ensure we only use 5 bits for transaction
-_Static_assert(NUM_TOTAL_TRANSACTIONS <= (1 << 5), "Max number of usable transactions exceeded");
+STATIC_ASSERT(NUM_TOTAL_TRANSACTIONS <= (1 << 5), "Max number of usable transactions exceeded");
diff --git a/quantum/split_common/transport.c b/quantum/split_common/transport.c
index 83edc34859..ea687af1c2 100644
--- a/quantum/split_common/transport.c
+++ b/quantum/split_common/transport.c
@@ -17,6 +17,7 @@
 #include <string.h>
 #include <debug.h>
 
+#include "compiler_support.h"
 #include "transactions.h"
 #include "transport.h"
 #include "transaction_id_define.h"
@@ -36,7 +37,7 @@
 #    include "i2c_slave.h"
 
 // Ensure the I2C buffer has enough space
-_Static_assert(sizeof(split_shared_memory_t) <= I2C_SLAVE_REG_COUNT, "split_shared_memory_t too large for I2C_SLAVE_REG_COUNT");
+STATIC_ASSERT(sizeof(split_shared_memory_t) <= I2C_SLAVE_REG_COUNT, "split_shared_memory_t too large for I2C_SLAVE_REG_COUNT");
 
 split_shared_memory_t *const split_shmem = (split_shared_memory_t *)i2c_slave_reg;