diff --git a/go/buildstep/stale.go b/go/buildstep/stale.go
index bd7deb7..674b36d 100644
--- a/go/buildstep/stale.go
+++ b/go/buildstep/stale.go
@@ -118,6 +118,12 @@ func AskWhat(a delivery.StepAsk) string {
 		}
 	case a.Compose != nil:
 		parts = append(parts, "compose", str(a.Compose.Fetch, "repository")+"@"+short(str(a.Compose.Fetch, "commit")))
+	case a.Run != nil:
+		parts = append(parts, "run "+a.Run.Program.Package, a.Run.Program.Repository+"@"+short(a.Run.Program.Commit))
+		if len(a.Run.Args) > 0 {
+			parts = append(parts, strings.Join(a.Run.Args, " "))
+		}
+		parts = append(parts, fmt.Sprintf("%d heads", len(a.Run.Heads)))
 	}
 	return strings.Join(parts, ", ")
 }
diff --git a/go/buildstep/stale_test.go b/go/buildstep/stale_test.go
index 8db343f..95b17d8 100644
--- a/go/buildstep/stale_test.go
+++ b/go/buildstep/stale_test.go
@@ -159,4 +159,9 @@ func TestAskWhat(t *testing.T) {
 	if got, want := AskWhat(build), "delivery ask, module mesh-x, fp abcdef012345"; got != want {
 		t.Errorf("build = %q", got)
 	}
+	// 1921: a run ask's step names the program, where it is built, its arguments and how many heads it reads.
+	run := delivery.StepAsk{Kind: "check", Run: &delivery.RunJob{Program: delivery.RunProgram{Repository: "novox/mesh-delivery", Commit: "fedcba9876543210", Package: "./cmd/mesh-checking-program"}, Heads: []delivery.RunHead{{}, {}}, Args: []string{"-verdict"}}}
+	if got, want := AskWhat(run), "check ask, run ./cmd/mesh-checking-program, novox/mesh-delivery@fedcba987654, -verdict, 2 heads"; got != want {
+		t.Errorf("run = %q", got)
+	}
 }