diff --git a/include/avr/avr128da28.h b/include/avr/avr128da28.h
index 066756c..7ae3153 100644
--- a/include/avr/avr128da28.h
+++ b/include/avr/avr128da28.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#include "asm.h"
-
 /* I/O addresses. */
 #define SPH    0x3E   /* Stack pointer high address. */
 #define SPL    0x3D   /* Stack pointer low address. */
diff --git a/src/crt0.S b/src/crt0.S
index 6a883cd..5e7901b 100644
--- a/src/crt0.S
+++ b/src/crt0.S
@@ -1,3 +1,4 @@
+#include <asm.h>
 #include <avr/avr128da28.h>
 
 /* This section contains the executable code. */