diff --git a/.gitignore b/.gitignore
index c28f2af5..3f539c05 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,6 @@
 asm
+expected
+__pycache__
 .splat/
 starfox64.ld
 starfox64.us.yaml
diff --git a/Makefile b/Makefile
index c2e0812f..53ba57e9 100644
--- a/Makefile
+++ b/Makefile
@@ -218,6 +218,12 @@ format:
 checkformat:
 	@./tools/check_format.sh -j $(nproc)
 
+# asm-differ expected object files
+expected:
+	mkdir -p expected/build
+	rm -rf expected/build/
+	cp -r build/ expected/build/
+
 
 #### Various Recipes ####