diff --git a/src/test/basics/base_uint_test.cpp b/src/test/basics/base_uint_test.cpp
index 08466a6ad2..2a9518e2a7 100644
--- a/src/test/basics/base_uint_test.cpp
+++ b/src/test/basics/base_uint_test.cpp
@@ -117,6 +117,7 @@ struct base_uint_test : beast::unit_test::Suite
         }
     }
 
+#ifdef NDEBUG
     void
     testFromRawSizeMismatch()
     {
@@ -128,7 +129,8 @@ struct base_uint_test : beast::unit_test::Suite
         {
             Blob const tooSmall{1, 2, 3, 4, 5, 6, 7, 8};
             test96 const result = test96::fromRaw(tooSmall);
-            BEAST_EXPECT(to_string(result) == "010203040506070800000000");
+            auto const resultText = to_string(result);
+            BEAST_EXPECTS(resultText == "010203040506070800000000", resultText);
         }
 
         // Container larger than the base_uint (16 bytes vs 12 bytes for
@@ -137,9 +139,11 @@ struct base_uint_test : beast::unit_test::Suite
         {
             Blob const tooBig{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
             test96 const result = test96::fromRaw(tooBig);
-            BEAST_EXPECT(to_string(result) == "0102030405060708090A0B0C");
+            auto const resultText = to_string(result);
+            BEAST_EXPECTS(resultText == "0102030405060708090A0B0C", resultText);
         }
     }
+#endif
 
     void
     run() override