diff --git a/src/server/routes/contract/extensions/erc1155/write/mint-to.ts b/src/server/routes/contract/extensions/erc1155/write/mint-to.ts
index 63ca44a7..6508c87f 100644
--- a/src/server/routes/contract/extensions/erc1155/write/mint-to.ts
+++ b/src/server/routes/contract/extensions/erc1155/write/mint-to.ts
@@ -106,7 +106,8 @@ export async function erc1155mintTo(fastify: FastifyInstance) {
               animation_url: metadata.animation_url ?? undefined,
               external_url: metadata.external_url ?? undefined,
               background_color: metadata.background_color ?? undefined,
-              properties: metadata.properties || metadata.attributes,
+              properties: metadata.properties ?? undefined,
+              attributes: metadata.attributes ?? undefined,
             };
       const transaction = mintTo({
         contract,
diff --git a/src/server/routes/contract/extensions/erc721/write/mint-to.ts b/src/server/routes/contract/extensions/erc721/write/mint-to.ts
index 7e7d0c14..0385d0bc 100644
--- a/src/server/routes/contract/extensions/erc721/write/mint-to.ts
+++ b/src/server/routes/contract/extensions/erc721/write/mint-to.ts
@@ -101,7 +101,8 @@ export async function erc721mintTo(fastify: FastifyInstance) {
               animation_url: metadata.animation_url ?? undefined,
               external_url: metadata.external_url ?? undefined,
               background_color: metadata.background_color ?? undefined,
-              properties: metadata.properties || metadata.attributes,
+              properties: metadata.properties ?? undefined,
+              attributes: metadata.attributes ?? undefined,
             };
       const transaction = mintTo({
         contract,