diff --git a/openpype/settings/entities/schemas/projects_schema/schema_project_slack.json b/openpype/settings/entities/schemas/projects_schema/schema_project_slack.json
index 532aa083b3..58708776ca 100644
--- a/openpype/settings/entities/schemas/projects_schema/schema_project_slack.json
+++ b/openpype/settings/entities/schemas/projects_schema/schema_project_slack.json
@@ -88,7 +88,7 @@
                                                 },
                                                 {
                                                     "type": "text",
-                                                    "multiline": false,
+                                                    "multiline": true,
                                                     "key": "message",
                                                     "label": "Message"
                                                 }