diff --git a/cmd/mesh-controller/same_program_test.go b/cmd/mesh-controller/same_program_test.go
index a7c91932..479dce8b 100644
--- a/cmd/mesh-controller/same_program_test.go
+++ b/cmd/mesh-controller/same_program_test.go
@@ -6,6 +6,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/novox/mesh-controller/internal/catalogue"
 	"github.com/novox/mesh-controller/internal/inventory"
 	"github.com/novox/mesh-controller/internal/link"
 )
@@ -107,6 +108,12 @@ func TestAWalkWhoseEveryBuildCameOutTheSameIsDone(t *testing.T) {
 		Sources: []inventory.BuildSource{{Paths: []string{"main.go", "go.mod"}}}}); err != nil {
 		t.Fatal(err)
 	}
+	// What runs: the module registered with that build's image (RegisteredHeld reads the module table).
+	if err := inv.RegisterModule(ctx, catalogue.Manifest{Module: "one", Version: "1", Resources: []map[string]any{
+		{"id": "app", "type": "container", "name": "one", "image": "store/one@sha256:aaaa"}}},
+		inventory.Source{Repository: "novox/one", Ref: "main", BuiltFrom: "c0", Asked: t0.Add(-time.Hour)}); err != nil {
+		t.Fatal(err)
+	}
 	pull := link.PullRef{Owner: "novox", Repo: "one", Number: 7}
 	was := checkedBuildsOf
 	checkedBuildsOf = func(context.Context, []link.PullRef) ([]link.CheckedBuild, error) {