diff --git a/api/core/tools/workflow_as_tool/provider.py b/api/core/tools/workflow_as_tool/provider.py
index d73012375d..aef8b3f779 100644
--- a/api/core/tools/workflow_as_tool/provider.py
+++ b/api/core/tools/workflow_as_tool/provider.py
@@ -37,6 +37,7 @@ VARIABLE_TO_PARAMETER_TYPE_MAPPING = {
     VariableEntityType.CHECKBOX: ToolParameter.ToolParameterType.BOOLEAN,
     VariableEntityType.FILE: ToolParameter.ToolParameterType.FILE,
     VariableEntityType.FILE_LIST: ToolParameter.ToolParameterType.FILES,
+    VariableEntityType.JSON_OBJECT: ToolParameter.ToolParameterType.OBJECT,
 }