diff --git a/collections/Douce/MS_Douce_272.xml b/collections/Douce/MS_Douce_272.xml
index 4e0c66de42..6bc601f9e8 100644
--- a/collections/Douce/MS_Douce_272.xml
+++ b/collections/Douce/MS_Douce_272.xml
@@ -278,7 +278,7 @@
                      <supportDesc material="perg">
                         <support> parchment; paper fly-leaves</support>
                         <extent> 205 leaves <dimensions type="leaf" unit="mm">
-                              <height>c. 193</height>
+                              <height quantity="193">c. 193</height>
                               <width>135</width>
                            </dimensions><note>Leaves were trimmed in rebinding, occasionally causing
                               the loss of decoration.</note></extent>