diff --git a/go/seatdef/seatdef_test.go b/go/seatdef/seatdef_test.go
index fccd43b..43881f4 100644
--- a/go/seatdef/seatdef_test.go
+++ b/go/seatdef/seatdef_test.go
@@ -4,8 +4,6 @@ import (
 	"errors"
 	"strings"
 	"testing"
-
-	"git.novox.be/novox/mesh-sdk/go/catalogue"
 )
 
 // TestADefinitionIsReadStrictlyNamingWhatIsWrong is the format's own table (design 26: a valid definition parses;
@@ -149,13 +147,3 @@ func withState(def, state string) string {
 	}
 	return strings.Replace(def, `"decision":"ADR 1",`, `"decision":"ADR 1","states":[`+state+`],`, 1)
 }
-
-// TestTheTemplatesAreTheCataloguesSix holds this reader's list of templates equal to the one a module's `requires`
-// entry takes (ADR 0595 §2), so a seventh template cannot be added to one and not the other.
-func TestTheTemplatesAreTheCataloguesSix(t *testing.T) {
-	want := []string{catalogue.TemplateState, catalogue.TemplateEvents, catalogue.TemplateWorkQueue,
-		catalogue.TemplateLog, catalogue.TemplateObjects, catalogue.TemplateLedger}
-	if strings.Join(Templates, ",") != strings.Join(want, ",") {
-		t.Errorf("templates %v, the catalogue's %v", Templates, want)
-	}
-}
diff --git a/go/seatdef/templates_test.go b/go/seatdef/templates_test.go
new file mode 100644
index 0000000..88bac53
--- /dev/null
+++ b/go/seatdef/templates_test.go
@@ -0,0 +1,20 @@
+package seatdef_test
+
+import (
+	"strings"
+	"testing"
+
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
+	"git.novox.be/novox/mesh-sdk/go/seatdef"
+)
+
+// (An external test: the catalogue reads definitions, so seatdef's own tests cannot import it.)
+// TestTheTemplatesAreTheCataloguesSix holds this reader's list of templates equal to the one a module's `requires`
+// entry takes (ADR 0595 §2), so a seventh template cannot be added to one and not the other.
+func TestTheTemplatesAreTheCataloguesSix(t *testing.T) {
+	want := []string{catalogue.TemplateState, catalogue.TemplateEvents, catalogue.TemplateWorkQueue,
+		catalogue.TemplateLog, catalogue.TemplateObjects, catalogue.TemplateLedger}
+	if strings.Join(seatdef.Templates, ",") != strings.Join(want, ",") {
+		t.Errorf("templates %v, the catalogue's %v", seatdef.Templates, want)
+	}
+}