diff --git a/Rsconscript b/Rsconscript
index 0aa52c8..3790fe3 100644
--- a/Rsconscript
+++ b/Rsconscript
@@ -34,5 +34,11 @@ uefi_env = env "uefi" do |env|
 end
 
 task "run" do
-	sh %W[qemu-system-x86_64 -bios OVMF.fd -drive file=#{uefi_env.expand("^/efi-loader.img")},format=raw]
+  ovmf = "OVMF.fd"
+  if File.exist?("/usr/share/edk2/x64/OVMF.fd")
+    ovmf = "/usr/share/edk2/x64/OVMF.fd"
+  elsif File.exist?("/usr/share/edk2/x64/OVMF.4m.fd")
+    ovmf = "/usr/share/edk2/x64/OVMF.4m.fd"
+  end
+	sh %W[qemu-system-x86_64 -bios #{ovmf} -drive file=#{uefi_env.expand("^/efi-loader.img")},format=raw]
 end