diff --git a/kernel-src/arch/x86-64/isr.asm b/kernel-src/arch/x86-64/isr.asm
index e5b8b0a5..1f8b9ca6 100644
--- a/kernel-src/arch/x86-64/isr.asm
+++ b/kernel-src/arch/x86-64/isr.asm
@@ -77,7 +77,7 @@ isr_%+ i:
 	jne .notneeded2
 	swapgs
 	.notneeded2:
-	iret
+	o64 iret
 %assign i i + 1
 %endrep