diff --git a/backend/internal/service/audit_log.go b/backend/internal/service/audit_log.go
index aabb0ca4b..9ca75ccab 100644
--- a/backend/internal/service/audit_log.go
+++ b/backend/internal/service/audit_log.go
@@ -112,7 +112,7 @@ func auditNormalizeBodyKey(key string) string {
 		case '_', '-', '.', ' ':
 			continue
 		default:
-			b.WriteRune(r)
+			_, _ = b.WriteRune(r)
 		}
 	}
 	return b.String()