diff --git a/sched/misc/assert.c b/sched/misc/assert.c
index 54c3be3f840..60cb14dc349 100644
--- a/sched/misc/assert.c
+++ b/sched/misc/assert.c
@@ -72,7 +72,7 @@
  * Private Data
  ****************************************************************************/
 
-static uint8_t g_last_regs[XCPTCONTEXT_SIZE] aligned_data(16);
+static uintptr_t g_last_regs[XCPTCONTEXT_REGS] aligned_data(16);
 
 #ifdef CONFIG_BOARD_COREDUMP
 static struct lib_syslogstream_s  g_syslogstream;