Fix missing ERROR inc
diff --git a/test/test-xml.sh b/test/test-xml.sh
index c50bab9..63bb2ea 100755
--- a/test/test-xml.sh
+++ b/test/test-xml.sh
@@ -27,6 +27,7 @@
   log_success "$I5_FILE contains $TEXTS non-empty h.author elements"
 else
   log_failure "$I5_FILE does not contain $TEXTS non-empty h.author elements: $observed"
+  ((ERRORS++))
 fi
 
 observed=$(xmlstarlet sel --net -t -v "/idsCorpus/idsHeader/fileDesc/titleStmt/c.title" target/dnb13.i5.xml)