diff --git a/api/core/tools/workflow_as_tool/provider.py b/api/core/tools/workflow_as_tool/provider.py
index d7afbc7389..c8e91413cd 100644
--- a/api/core/tools/workflow_as_tool/provider.py
+++ b/api/core/tools/workflow_as_tool/provider.py
@@ -31,6 +31,7 @@ VARIABLE_TO_PARAMETER_TYPE_MAPPING = {
     VariableEntityType.PARAGRAPH: ToolParameter.ToolParameterType.STRING,
     VariableEntityType.SELECT: ToolParameter.ToolParameterType.SELECT,
     VariableEntityType.NUMBER: ToolParameter.ToolParameterType.NUMBER,
+    VariableEntityType.CHECKBOX: ToolParameter.ToolParameterType.BOOLEAN,
     VariableEntityType.FILE: ToolParameter.ToolParameterType.FILE,
     VariableEntityType.FILE_LIST: ToolParameter.ToolParameterType.FILES,
 }