diff --git a/src/NodaUncertaintyHelper.php b/src/NodaUncertaintyHelper.php
index be64dd6..29d1c6b 100644
--- a/src/NodaUncertaintyHelper.php
+++ b/src/NodaUncertaintyHelper.php
@@ -59,13 +59,14 @@ final class NodaUncertaintyHelper {
         "wohl um ",
         "circa ",
         "ca. ",
-        "ca "
+        "ca ",
     ];
 
     const TIME_UNCERTAINTY_SUFFIXES = [
         "(?)",
         "?",
-        " körül"
+        " körül",
+        ", um",
     ];
 
     /**