diff --git a/boot-qemu.py b/boot-qemu.py
index 28b717b..60377c8 100755
--- a/boot-qemu.py
+++ b/boot-qemu.py
@@ -283,7 +283,7 @@ def run(self):
             ]  # yapf: disable
 
         # Kernel options
-        if self.interactive or args.gdb:
+        if self.interactive or self.gdb:
             self.cmdline.append('rdinit=/bin/sh')
         if self.gdb:
             self.cmdline.append('nokaslr')