diff --git a/lib/base.h b/lib/base.h
index 1c05a7d..3a396a6 100644
--- a/lib/base.h
+++ b/lib/base.h
@@ -54,6 +54,7 @@ typedef u64 word_t;
 typedef i64 sword_t;
 
 /* Macros for the sizes of common base data types. */
+#define BYTE_SIZE  1
 #define SHORT_SIZE sizeof(short_t)
 #define HWORD_SIZE sizeof(hword_t)
 #define WORD_SIZE  sizeof(word_t)
diff --git a/lib/inst.c b/lib/inst.c
index b3e4772..bf7a635 100644
--- a/lib/inst.c
+++ b/lib/inst.c
@@ -16,7 +16,6 @@
 #include <assert.h>
 #include <stdbool.h>
 #include <stdio.h>
-#include <string.h>
 
 const char *opcode_as_cstr(opcode_t code)
 {