diff --git a/Makefile b/Makefile
index 8dfb2df..186cae3 100644
--- a/Makefile
+++ b/Makefile
@@ -12,12 +12,7 @@ ASFLAGS :=  -I include \
 
 MPFLAGS := -p SST39LF040@PLCC32
 
-SOURCES := src/memory.s \
-		   src/boot.s \
-		   src/irq.s \
-		   src/led.s \
-		   src/vera.s \
-		   src/main.s
+SOURCES := $(wildcard src/*.s)
 
 INCLUDES := $(wildcard include/*.i)