diff --git a/src/test/app/Vault_test.cpp b/src/test/app/Vault_test.cpp
index e7a8ebfd73..12494939c8 100644
--- a/src/test/app/Vault_test.cpp
+++ b/src/test/app/Vault_test.cpp
@@ -173,6 +173,7 @@ class Vault_test : public beast::unit_test::suite
             PrettyAsset asset = issuer["IOU"];
             env.trust(asset(1000), depositor);
             env(pay(issuer, depositor, asset(1000)));
+            env.close();
             testSequence(env, issuer, owner, depositor, vault, asset);
         }
 
@@ -183,6 +184,7 @@ class Vault_test : public beast::unit_test::suite
             PrettyAsset asset = mptt.issuanceID();
             mptt.authorize({.account = depositor});
             env(pay(issuer, depositor, asset(1000)));
+            env.close();
             testSequence(env, issuer, owner, depositor, vault, asset);
         }
     }
@@ -224,14 +226,16 @@ class Vault_test : public beast::unit_test::suite
 
         SUBCASE("data too large")
         {
-            tx[sfData] = blob257;
+            // A hexadecimal string of 257 bytes.
+            tx[sfData] = std::string(514, 'A');
             env(tx, ter(temSTRING_TOO_LARGE));
         }
 
         SUBCASE("metadata too large")
         {
             // This metadata is for the share token.
-            tx[sfMPTokenMetadata] = blob1025;
+            // A hexadecimal string of 1025 bytes.
+            tx[sfMPTokenMetadata] = std::string(2050, 'B');
             env(tx, ter(temSTRING_TOO_LARGE));
         }
     }
diff --git a/src/test/jtx/Env.h b/src/test/jtx/Env.h
index b332a76d6b..523a48cb97 100644
--- a/src/test/jtx/Env.h
+++ b/src/test/jtx/Env.h
@@ -792,9 +792,6 @@ Env::rpc(std::string const& cmd, Args&&... args)
         std::forward<Args>(args)...);
 }
 
-extern std::string blob257;
-extern std::string blob1025;
-
 }  // namespace jtx
 }  // namespace test
 }  // namespace ripple
diff --git a/src/test/jtx/impl/Env.cpp b/src/test/jtx/impl/Env.cpp
index b4c1e0d34e..1a8bdada2b 100644
--- a/src/test/jtx/impl/Env.cpp
+++ b/src/test/jtx/impl/Env.cpp
@@ -586,10 +586,6 @@ Env::disableFeature(uint256 const feature)
     app().config().features.erase(feature);
 }
 
-// The strings are hexadecimal. 1 byte = 2 hexadecimal characters.
-std::string blob257(514, 'A');
-std::string blob1025(2050, 'B');
-
 }  // namespace jtx
 }  // namespace test
 }  // namespace ripple