diff --git a/include/shared.h b/include/shared.h
index 1ad475889..e9066195a 100644
--- a/include/shared.h
+++ b/include/shared.h
@@ -1278,17 +1278,21 @@ typedef enum opts_type
  * digests
  */
 
-#define DGST_SIZE_4_2               (2  * sizeof (uint))   // 8
-#define DGST_SIZE_4_4               (4  * sizeof (uint))   // 16
-#define DGST_SIZE_4_5               (5  * sizeof (uint))   // 20
-#define DGST_SIZE_4_6               (6  * sizeof (uint))   // 24
-#define DGST_SIZE_4_8               (8  * sizeof (uint))   // 32
-#define DGST_SIZE_4_16              (16 * sizeof (uint))   // 64 !!!
-#define DGST_SIZE_4_32              (32 * sizeof (uint))   // 128 !!!
-#define DGST_SIZE_4_64              (64 * sizeof (uint))   // 256
-#define DGST_SIZE_8_8               (8  * sizeof (u64))    // 64 !!!
-#define DGST_SIZE_8_16              (16 * sizeof (u64))    // 128 !!!
-#define DGST_SIZE_8_25              (25 * sizeof (u64))    // 200
+typedef enum dgst_size
+{
+   DGST_SIZE_4_2  = (2  * sizeof (uint)),   // 8
+   DGST_SIZE_4_4  = (4  * sizeof (uint)),   // 16
+   DGST_SIZE_4_5  = (5  * sizeof (uint)),   // 20
+   DGST_SIZE_4_6  = (6  * sizeof (uint)),   // 24
+   DGST_SIZE_4_8  = (8  * sizeof (uint)),   // 32
+   DGST_SIZE_4_16 = (16 * sizeof (uint)),   // 64 !!!
+   DGST_SIZE_4_32 = (32 * sizeof (uint)),   // 128 !!!
+   DGST_SIZE_4_64 = (64 * sizeof (uint)),   // 256
+   DGST_SIZE_8_8  = (8  * sizeof (u64)),    // 64 !!!
+   DGST_SIZE_8_16 = (16 * sizeof (u64)),    // 128 !!!
+   DGST_SIZE_8_25 = (25 * sizeof (u64))     // 200
+
+} dgst_size_t;
 
 /**
  * parser