diff --git a/tests/Makefile b/tests/Makefile
index b011699..acb2734 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -107,4 +107,9 @@ monolithic.ttl: \
 	  && pyshacl \
 	    --shacl $(uco_srcdir)/ontology/owl/owl.ttl \
 	    _$@
+	# The monolithic build reviews itself, due to shapes pertaining to meta-classes.
+	source $(top_srcdir)/venv/bin/activate \
+	  && pyshacl \
+	    --shacl _$@ \
+	    _$@
 	mv _$@ $@