diff --git a/src/services/invitation.ts b/src/services/invitation.ts
index a740853..6934492 100644
--- a/src/services/invitation.ts
+++ b/src/services/invitation.ts
@@ -510,7 +510,7 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
     const templates = await this.engine.listImportedTemplates();
 
     // For each template, we need to create a 2d array of all the outputs
-    const outputs = templates.map(template => {
+    const outputs = templates.flatMap(template => {
       return Object.keys(template.outputs).map(output => {
         const templateIdentifier = generateTemplateIdentifier(template);
 
@@ -522,7 +522,7 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
     });
 
     // then, for each output, we need to get the spendable resources
-    const spendableResources = await Promise.all(outputs.flat().map(output => {
+    const spendableResources = await Promise.all(outputs.map(output => {
       return this.engine.getSpendableResources(this.data, {
         templateIdentifier: output.templateIdentifier,
         outputIdentifier: output.outputIdentifier,