diff --git a/src/include/types.h b/src/include/types.h
index 2d10ae483a..cbdb67a0ca 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -18,4 +18,6 @@
 #define BIT(x)				(1ul << (x))
 #endif
 
+#define BITS_PER_BYTE			8
+
 #endif /* __TYPES_H */