diff --git a/src/NodaUncertaintyHelper.php b/src/NodaUncertaintyHelper.php
index 18cc87d..50fd3eb 100644
--- a/src/NodaUncertaintyHelper.php
+++ b/src/NodaUncertaintyHelper.php
@@ -37,6 +37,9 @@ final class NodaUncertaintyHelper {
     const PERSINST_UNCERTAINTY_SUFFIXES = [
         "(?)",
         "?",
+        " [vermutlich]",
+        " [verm.]",
+        " [wahrscheinlich]",
     ];
 
     const TIME_INDICATORS_DISALLOWED = [