diff --git a/msdesc.odd b/msdesc.odd
index 4771c5d..94e2574 100644
--- a/msdesc.odd
+++ b/msdesc.odd
@@ -5196,7 +5196,7 @@
                                 <sch:rule 
                                     context="tei:height|tei:width">
                                     <sch:assert 
-                                        test="string-length(normalize-space(string())) gt 1"
+                                        test="string-length(normalize-space(string())) gt 0"
                                         role="warn">
                                         For dimensions the website displays the content of height and width elements. Attribute values are not displayed. Empty elements will not display correctly.
                                     </sch:assert>