diff --git a/src/test/cuckoocache_tests.cpp b/src/test/cuckoocache_tests.cpp
--- a/src/test/cuckoocache_tests.cpp
+++ b/src/test/cuckoocache_tests.cpp
@@ -60,10 +60,7 @@
     uint32_t n_insert = static_cast<uint32_t>(load * (bytes / sizeof(uint256)));
     hashes.resize(n_insert);
     for (uint32_t i = 0; i < n_insert; ++i) {
-        uint32_t *ptr = (uint32_t *)hashes[i].begin();
-        for (uint8_t j = 0; j < 8; ++j) {
-            *(ptr++) = InsecureRand32();
-        }
+        hashes[i] = InsecureRand256();
     }
     /**
      * We make a copy of the hashes because future optimizations of the
@@ -137,10 +134,7 @@
     uint32_t n_insert = static_cast<uint32_t>(load * (bytes / sizeof(uint256)));
     hashes.resize(n_insert);
     for (uint32_t i = 0; i < n_insert; ++i) {
-        uint32_t *ptr = (uint32_t *)hashes[i].begin();
-        for (uint8_t j = 0; j < 8; ++j) {
-            *(ptr++) = InsecureRand32();
-        }
+        hashes[i] = InsecureRand256();
     }
     /**
      * We make a copy of the hashes because future optimizations of the
@@ -208,10 +202,7 @@
     uint32_t n_insert = static_cast<uint32_t>(load * (bytes / sizeof(uint256)));
     hashes.resize(n_insert);
     for (uint32_t i = 0; i < n_insert; ++i) {
-        uint32_t *ptr = (uint32_t *)hashes[i].begin();
-        for (uint8_t j = 0; j < 8; ++j) {
-            *(ptr++) = InsecureRand32();
-        }
+        hashes[i] = InsecureRand256();
     }
     /**
      * We make a copy of the hashes because future optimizations of the
@@ -326,10 +317,7 @@
             inserts.resize(n_insert);
             reads.reserve(n_insert / 2);
             for (uint32_t i = 0; i < n_insert; ++i) {
-                uint32_t *ptr = (uint32_t *)inserts[i].begin();
-                for (uint8_t j = 0; j < 8; ++j) {
-                    *(ptr++) = InsecureRand32();
-                }
+                inserts[i] = InsecureRand256();
             }
             for (uint32_t i = 0; i < n_insert / 4; ++i) {
                 reads.push_back(inserts[i]);