diff --git a/shortcuts/wiki/wiki.go b/shortcuts/wiki/wiki.go
index 1ad8951..ad39fd6 100644
--- a/shortcuts/wiki/wiki.go
+++ b/shortcuts/wiki/wiki.go
@@ -125,11 +125,9 @@ func Shortcuts() []*common.Shortcut {
 					"projectId":      projectID,
 					"pageName":       name,
 					"title":          name,
+					"message":        ctx.Arg("message"),
 					"content_base64": base64.StdEncoding.EncodeToString([]byte(content)),
 				}
-				if msg := ctx.Arg("message"); msg != "" {
-					body["message"] = msg
-				}
 				return callWikiAPI(ctx, "POST", "/wiki/open/updateWiki", body, nil)
 			},
 		},
@@ -184,10 +182,6 @@ func callWikiAPI(ctx *common.RuntimeContext, method, path string, body interface
 		return err
 	}
 	return ctx.Output(env)
-	if err != nil {
-		return err
-	}
-	return ctx.Output(env)
 }
 
 func fetchProjectID(ctx *common.RuntimeContext) (int, error) {
diff --git a/shortcuts/wiki/wiki_test.go b/shortcuts/wiki/wiki_test.go
index c791c38..e635b26 100644
--- a/shortcuts/wiki/wiki_test.go
+++ b/shortcuts/wiki/wiki_test.go
@@ -142,6 +142,38 @@ func TestWikiUpdate(t *testing.T) {
 	assertEqual(t, updatePayload["message"], "Update wiki page")
 }
 
+func TestWikiUpdateWithoutMessage(t *testing.T) {
+	var updatePayload map[string]interface{}
+	server := newWikiTestServer(t, func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.Method == "GET" && r.URL.Path == "/owner/repo.json":
+			writeJSON(t, w, map[string]interface{}{
+				"id":         float64(1547460),
+				"project_id": float64(1547460),
+			})
+		case r.Method == "POST" && r.URL.Path == "/wiki/open/updateWiki":
+			updatePayload = decodeJSON(t, r)
+			writeJSON(t, w, map[string]interface{}{
+				"code": 200,
+			})
+		default:
+			t.Fatalf("unexpected request: %s %s", r.Method, r.URL.Path)
+		}
+	})
+	defer server.Close()
+
+	if err := runWikiShortcut(t, server, "update", map[string]string{
+		"name":    "Home",
+		"content": "Updated content",
+	}); err != nil {
+		t.Fatalf("update without message failed: %v", err)
+	}
+
+	assertEqual(t, updatePayload["pageName"], "Home")
+	// message field should be present as empty string, not omitted
+	assertEqual(t, updatePayload["message"], "")
+}
+
 // --- Delete ---
 
 func TestWikiDelete(t *testing.T) {