diff --git a/drivers/nvme/nvme.asm b/drivers/nvme/nvme.asm
index 616d318..13b98e5 100644
--- a/drivers/nvme/nvme.asm
+++ b/drivers/nvme/nvme.asm
@@ -52,6 +52,8 @@ local   AnythingLoadedSuccessfully db 0
 	jz      .err
 	xor 	ebx, ebx
 	mov 	esi, dword [p_nvme_devices]
+	test 	esi, esi
+	jz 	.err
 	sub 	esi, sizeof.pcidev
 
 .loop: