diff --git a/src/app/modules/catalog/catalog.provider.ts b/src/app/modules/catalog/catalog.provider.ts
index 58a81ac4..adef15ab 100644
--- a/src/app/modules/catalog/catalog.provider.ts
+++ b/src/app/modules/catalog/catalog.provider.ts
@@ -121,11 +121,11 @@ export class CatalogProvider {
               arguments: {
                 bounds: {
                   lowerBound: {
-                    limit: `${new Date(new Date().setFullYear(new Date().getFullYear() - 1)).toISOString}`,
+                    limit: `${new Date(new Date().setFullYear(new Date().getFullYear() - 1)).toISOString()}`,
                     mode: 'inclusive',
                   },
                   upperBound: {
-                    limit: `${new Date(new Date().setFullYear(new Date().getFullYear() + 1)).toISOString}`,
+                    limit: `${new Date(new Date().setFullYear(new Date().getFullYear() + 1)).toISOString()}`,
                     mode: 'inclusive',
                   },
                 },