diff --git a/jq/wmsc.jq b/jq/wmsc.jq
index a81c5bc..4cd470b 100644
--- a/jq/wmsc.jq
+++ b/jq/wmsc.jq
@@ -21,6 +21,7 @@
                 # so we first compute a timestamp that we can use to sort items with. This helps with bad RSS reader implementations.
                 [.[] | .timestamp = (
                     .text
+                    | strings
                     # Dates are in the middle of the bullet contents, sometimes with their parts separated with punctuation, sometimes not:
                     # 2019-02-31, 20190231, 2019_0231, 2019 02-31 etc.
                     | match("[^[:alnum:]](?<year>[0-9]{4})[^[:alnum:]]?(?<month>(?:0[1-9]|1[0-2]))[^[:alnum:]]?(?<day>(?:[0-2][0-9]|3[01]))").captures