diff --git a/CHANGELOG.md b/CHANGELOG.md
index 19b49a15..b99922fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [1.1.2] - Unreleased
+### Fixed
+- The known_value filter property for triggers is correctly considered when relevant.
+([#393](https://github.com/astarte-platform/astarte-dashboard/issues/393))
 
 ## [1.1.1] - 2023-11-15
 ### Added
diff --git a/src/astarte-client/models/Trigger/index.ts b/src/astarte-client/models/Trigger/index.ts
index 836f1c2a..16d955df 100644
--- a/src/astarte-client/models/Trigger/index.ts
+++ b/src/astarte-client/models/Trigger/index.ts
@@ -321,9 +321,12 @@ const astarteSimpleDataTriggerObjectSchema: yup.ObjectSchema<AstarteSimpleDataTr
           valueMatchOperator: string | undefined,
           iface: AstarteInterface | null,
         ) => {
-          if (!iface || !matchPath) {
+          if (!matchPath) {
             return yup.mixed<string | boolean | number>().strip(true);
           }
+          if (!iface) {
+            return yup.mixed<string | boolean | number>();
+          }
           const matchMapping = iface.mappings.find((m) =>
             AstarteMapping.matchEndpoint(m.endpoint, matchPath),
           );