diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..33b8f3f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+# Generated files
+*.list
+*.SYS
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 631a079..01399bf 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ CC65 = ~/dev/cc65/bin
 CAFLAGS = --target apple2enh --list-bytes 0
 CCFLAGS = --config apple2-asm.cfg
 
-TARGETS = b.SYS
+TARGETS = bbb.SYS
 
 .PHONY: clean all
 all: $(TARGETS)
diff --git a/b.s b/bbb.s
similarity index 100%
rename from b.s
rename to bbb.s