diff --git a/libs/event-emitter/src/issue-enhancers/priority-styles-enhancer.ts b/libs/event-emitter/src/issue-enhancers/priority-styles-enhancer.ts
index 6da3687..95c9416 100644
--- a/libs/event-emitter/src/issue-enhancers/priority-styles-enhancer.ts
+++ b/libs/event-emitter/src/issue-enhancers/priority-styles-enhancer.ts
@@ -64,7 +64,8 @@ export class PriorityStylesEnhancer implements IssueEnhancerInterface {
   async enhance(
     issue: RedmineTypes.ExtendedIssue,
   ): Promise<RedmineTypes.ExtendedIssue> {
-    const priorityName = issue.priority.name;
+    const priorityName = issue?.priority?.name;
+    if (!priorityName) return issue;
     const priorityRule = this.findPriorityRule(priorityName);
     issue[this.targetKey] = priorityRule.style || priorityRule.className;
     return issue;