diff --git a/src/include/stdlib.h b/src/include/stdlib.h
index 45420d7876..5465c14f92 100644
--- a/src/include/stdlib.h
+++ b/src/include/stdlib.h
@@ -5,7 +5,7 @@
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
 
-#define ALIGN(x,a)              __ALIGN_MASK(x,(typeof(x))(a)-1)
+#define ALIGN(x,a)              __ALIGN_MASK(x,(typeof(x))(a)-1UL)
 #define __ALIGN_MASK(x,mask)    (((x)+(mask))&~(mask))
 
 #define MIN(a,b) ((a) < (b) ? (a) : (b))
diff --git a/src/mainboard/via/epia-n/acpi_tables.c b/src/mainboard/via/epia-n/acpi_tables.c
index 589e14c606..b4966bb1db 100644
--- a/src/mainboard/via/epia-n/acpi_tables.c
+++ b/src/mainboard/via/epia-n/acpi_tables.c
@@ -118,10 +118,6 @@ unsigned long acpi_fill_srat(unsigned long current)
 	return current;
 }
 
-#define ALIGN(x,a)              __ALIGN_MASK(x,(typeof(x))(a)-1)
-#define __ALIGN_MASK(x,mask)    (((x)+(mask))&~(mask))
-#define ALIGN_CURRENT current = ((current + 0x0f) & -0x10)
-
 unsigned long write_acpi_tables(unsigned long start)
 {
 	unsigned long current;