diff --git a/src/i18n/org/opencastproject/adminui/languages/lang-en_US.json b/src/i18n/org/opencastproject/adminui/languages/lang-en_US.json
index 200b3c6d1a..1c4380470f 100644
--- a/src/i18n/org/opencastproject/adminui/languages/lang-en_US.json
+++ b/src/i18n/org/opencastproject/adminui/languages/lang-en_US.json
@@ -217,6 +217,7 @@
 		"MISSING_ACL_RULES": "At least one role with Read and Write permissions is required!",
 		"SAVED_ACL_RULES": "The access rules have been saved.",
 		"SERIES_THEME_REPROCESS_EXISTING_EVENTS": "The existing events in this series will need to be reprocessed",
+		"SERIES_THEME_NOT_SAVED": "The theme could not be saved",
 		"SERIES_ACL_LOCKED": "Editing Access Policies is not allowed when operations are running on an event that is part of the series",
 		"EVENT_ACL_MISSING_READWRITE_ROLE": "The Access Policy requires at least one role with Read and Write permissions.",
 		"METADATA_SAVED": "The metadata has been saved.",
diff --git a/src/slices/seriesDetailsSlice.ts b/src/slices/seriesDetailsSlice.ts
index 47415588cd..99544e1307 100644
--- a/src/slices/seriesDetailsSlice.ts
+++ b/src/slices/seriesDetailsSlice.ts
@@ -335,6 +335,14 @@ export const updateSeriesTheme = (params: {
 			})
 			.catch(response => {
 				console.error(response);
+				dispatch(
+					addNotification({
+						type: "error",
+						key: "SERIES_THEME_NOT_SAVED",
+						duration: -1,
+						context: NOTIFICATION_CONTEXT,
+					}),
+				);
 			});
 	} else {
 		const data = new URLSearchParams();
@@ -359,6 +367,14 @@ export const updateSeriesTheme = (params: {
 			})
 			.catch(response => {
 				console.error(response);
+				dispatch(
+					addNotification({
+						type: "error",
+						key: "SERIES_THEME_NOT_SAVED",
+						duration: -1,
+						context: NOTIFICATION_CONTEXT,
+					}),
+				);
 			});
 	}
 };