diff --git a/arch/nios2/core/exception.S b/arch/nios2/core/exception.S
index 5f995afe135..8dd7e0b9b9b 100644
--- a/arch/nios2/core/exception.S
+++ b/arch/nios2/core/exception.S
@@ -12,7 +12,7 @@
 GTEXT(_exception)
 
 /* import */
-GTEXT(_Fault)
+GTEXT(z_nios2_fault)
 GTEXT(arch_swap)
 #ifdef CONFIG_IRQ_OFFLOAD
 GTEXT(z_irq_do_offload)
@@ -171,12 +171,12 @@ not_interrupt:
 
 _exception_enter_fault:
 	/* If we get here, the exception wasn't in interrupt or an
-	 * invocation of irq_offload(). Let _Fault() handle it in
+	 * invocation of irq_offload(). Let z_nios2_fault() handle it in
 	 * C domain
 	 */
 
 	mov  r4, sp
-	call _Fault
+	call z_nios2_fault
 	jmpi _exception_exit
 
 no_reschedule:
diff --git a/arch/nios2/core/fatal.c b/arch/nios2/core/fatal.c
index b531bb41e17..3f34c1e8fc7 100644
--- a/arch/nios2/core/fatal.c
+++ b/arch/nios2/core/fatal.c
@@ -102,7 +102,7 @@ static char *cause_str(uint32_t cause_code)
 }
 #endif
 
-FUNC_NORETURN void _Fault(const struct arch_esf *esf)
+FUNC_NORETURN void z_nios2_fault(const struct arch_esf *esf)
 {
 #if defined(CONFIG_PRINTK) || defined(CONFIG_LOG)
 	/* Unfortunately, completely unavailable on Nios II/e cores */