diff --git a/src/NodaUncertaintyHelper.php b/src/NodaUncertaintyHelper.php
index 0014d4d..ec1d544 100644
--- a/src/NodaUncertaintyHelper.php
+++ b/src/NodaUncertaintyHelper.php
@@ -89,6 +89,8 @@ final class NodaUncertaintyHelper {
         "Vermtl. ",
         "vermutlich ",
         "Vermutlich ",
+        "vermutlich um ",
+        "Vermutlich um ",
         "wohl ",
         "wohl um ",
         "Wohl ",