diff --git a/src/libxrpl/protocol/AMMCore.cpp b/src/libxrpl/protocol/AMMCore.cpp
index 3bebfc4659..1ea83afc23 100644
--- a/src/libxrpl/protocol/AMMCore.cpp
+++ b/src/libxrpl/protocol/AMMCore.cpp
@@ -66,7 +66,7 @@ invalidAMMAsset(
     Issue const& issue,
     std::optional<std::pair<Issue, Issue>> const& pair)
 {
-    if (badCurrency() == issue.currency)
+    if (isBadCurrency(issue.currency))
         return temBAD_CURRENCY;
     if (isXRP(issue) && issue.account.isNonZero())
         return temBAD_ISSUER;
diff --git a/src/libxrpl/protocol/Issue.cpp b/src/libxrpl/protocol/Issue.cpp
index 179cb1eb14..a42baf8ad7 100644
--- a/src/libxrpl/protocol/Issue.cpp
+++ b/src/libxrpl/protocol/Issue.cpp
@@ -111,7 +111,7 @@ issueFromJson(Json::Value const& v)
     }
 
     auto const currency = to_currency(curStr.asString());
-    if (currency == badCurrency() || currency == noCurrency())
+    if (isBadCurrency(currency) || currency == noCurrency())
     {
         Throw<Json::error>("issueFromJson currency must be a valid currency");
     }
diff --git a/src/libxrpl/protocol/STCurrency.cpp b/src/libxrpl/protocol/STCurrency.cpp
index 56ac19da11..55726fef5b 100644
--- a/src/libxrpl/protocol/STCurrency.cpp
+++ b/src/libxrpl/protocol/STCurrency.cpp
@@ -103,7 +103,7 @@ currencyFromJson(SField const& name, Json::Value const& v)
     }
 
     auto const currency = to_currency(v.asString());
-    if (currency == badCurrency() || currency == noCurrency())
+    if (isBadCurrency(currency) || currency == noCurrency())
     {
         Throw<std::runtime_error>(
             "currencyFromJson currency must be a valid currency");