diff --git a/src/crypto/wild_keccak.cpp b/src/crypto/wild_keccak.cpp
index d0297fd6..c34216ee 100644
--- a/src/crypto/wild_keccak.cpp
+++ b/src/crypto/wild_keccak.cpp
@@ -177,7 +177,7 @@ namespace crypto
       uint64_t primary_item_index = (hash_index - (hash_index % 10)) / 10;
       uint64_t sha_count = hash_index % 10;
       crypto::hash res = scratchpad_light[primary_item_index];
-      for (int i = 0; i != sha_count; i++)
+      for (uint64_t i = 0; i != sha_count; i++)
       {
         res = cn_fast_hash(&res, sizeof(res));
       }
diff --git a/src/currency_core/scratchpad_helper.h b/src/currency_core/scratchpad_helper.h
index dce6b4e9..515acd56 100644
--- a/src/currency_core/scratchpad_helper.h
+++ b/src/currency_core/scratchpad_helper.h
@@ -7,6 +7,8 @@
 #include "currency_protocol/blobdatatype.h"
 #include "currency_core/currency_basic.h"
 #include "cache_helper.h"
+#include "currency_core/currency_format_utils.h"
+#include "currency_core/currency_format_utils_blocks.h"
 
 namespace currency
 {