diff --git a/src/abi/abi_type.ts b/src/abi/abi_type.ts
index bd467a90d..bfd599f32 100644
--- a/src/abi/abi_type.ts
+++ b/src/abi/abi_type.ts
@@ -261,7 +261,7 @@ export class ABIAddressType extends ABIType {
       return decodedAddress.publicKey;
     }
 
-    if (value instanceof Address) {
+    if (typeof value === 'object' && 'publicKey' in value) {
       return value.publicKey;
     }
 
diff --git a/src/encoding/address.ts b/src/encoding/address.ts
index 77a2f7509..64326b3e8 100644
--- a/src/encoding/address.ts
+++ b/src/encoding/address.ts
@@ -57,10 +57,7 @@ export class Address {
    * Check if the address is equal to another address.
    */
   equals(other: Address): boolean {
-    return (
-      other instanceof Address &&
-      utils.arrayEqual(this.publicKey, other.publicKey)
-    );
+    return utils.arrayEqual(this.publicKey, other.publicKey);
   }
 
   /**
diff --git a/src/encoding/schema/address.ts b/src/encoding/schema/address.ts
index 3eb7f5c7e..3b93db1fb 100644
--- a/src/encoding/schema/address.ts
+++ b/src/encoding/schema/address.ts
@@ -20,8 +20,14 @@ export class AddressSchema extends Schema {
   }
 
   public prepareMsgpack(data: unknown): MsgpackEncodingData {
-    if (data instanceof Address) {
-      return data.publicKey;
+    if (
+      data instanceof Address ||
+      (data &&
+        typeof data === 'object' &&
+        'publicKey' in data &&
+        data.publicKey instanceof Uint8Array)
+    ) {
+      return data.publicKey as Uint8Array;
     }
     throw new Error(`Invalid address: (${typeof data}) ${data}`);
   }
@@ -40,8 +46,13 @@ export class AddressSchema extends Schema {
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
     _options: PrepareJSONOptions
   ): JSONEncodingData {
-    if (data instanceof Address) {
-      return data.toString();
+    if (
+      data instanceof Address ||
+      (data && typeof data === 'object' && 'toString' in data)
+    ) {
+      // Since are checking for the toString method, we might have something that isn't an Address
+      // Using Address.fromString allows us to throw an error if the input is not a valid address
+      return Address.fromString(data.toString()).toString();
     }
     throw new Error(`Invalid address: (${typeof data}) ${data}`);
   }
diff --git a/src/transaction.ts b/src/transaction.ts
index bd9864ec2..8ebafe4ae 100644
--- a/src/transaction.ts
+++ b/src/transaction.ts
@@ -81,6 +81,11 @@ function ensureAddress(input: unknown): Address {
   if (input instanceof Address) {
     return input;
   }
+
+  if (typeof input === 'object' && 'toString' in input) {
+    return Address.fromString(input.toString());
+  }
+
   throw new Error(`Not an address: ${input}`);
 }
 
@@ -93,6 +98,8 @@ function optionalAddress(input: unknown): Address | undefined {
     addr = input;
   } else if (typeof input === 'string') {
     addr = Address.fromString(input);
+  } else if (typeof input === 'object' && 'toString' in input) {
+    addr = Address.fromString(input.toString());
   } else {
     throw new Error(`Not an address: ${input}`);
   }