diff --git a/include/acpi/acobject.h b/include/acpi/acobject.h
index 8fdee31..b81e923 100644
--- a/include/acpi/acobject.h
+++ b/include/acpi/acobject.h
@@ -52,7 +52,15 @@
  * to the interpreter, and to keep track of the various handlers such as
  * address space handlers and notify handlers. The object is a constant
  * size in order to allow it to be cached and reused.
+ *
+ * Note: The object is optimized to be aligned and will not work if it is
+ * byte-packed.
  */
+#if ACPI_MACHINE_WIDTH == 64
+#pragma pack(8)
+#else
+#pragma pack(4)
+#endif
 
 /*******************************************************************************
  *
@@ -101,7 +109,8 @@
 ACPI_OBJECT_COMMON_HEADER};
 
 struct acpi_object_integer {
-	ACPI_OBJECT_COMMON_HEADER acpi_integer value;
+	ACPI_OBJECT_COMMON_HEADER u8 fill[3];	/* Prevent warning on some compilers */
+	acpi_integer value;
 };
 
 /*
@@ -203,7 +212,9 @@
 };
 
 struct acpi_object_processor {
-	ACPI_OBJECT_COMMON_HEADER u8 proc_id;
+	ACPI_OBJECT_COMMON_HEADER
+	    /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */
+	u8 proc_id;
 	u8 length;
 	 ACPI_COMMON_NOTIFY_INFO acpi_io_address address;
 };
@@ -406,4 +417,6 @@
 	union acpi_parse_object op;
 };
 
+#pragma pack()
+
 #endif				/* _ACOBJECT_H */