diff --git a/src/bmm/workflows/4-implementation/create-story/workflow.md b/src/bmm/workflows/4-implementation/create-story/workflow.md
index a7aa49f8c..702a60bfc 100644
--- a/src/bmm/workflows/4-implementation/create-story/workflow.md
+++ b/src/bmm/workflows/4-implementation/create-story/workflow.md
@@ -325,7 +325,7 @@ web_bundle: false
   </step>
 
   <step n="6" goal="Update sprint status and finalize">
-    <invoke-task>Validate against checklist at {installed_path}/checklist.md using _bmad/core/tasks/validate-workflow.xml</invoke-task>
+    <invoke-task>Validate against checklist at {installed_path}/checklist.md using _bmad/core/tasks/validate-workflow.md</invoke-task>
     <action>Save story document unconditionally</action>
 
     <!-- Update sprint status -->
diff --git a/src/bmm/workflows/excalidraw-diagrams/create-diagram/instructions.md b/src/bmm/workflows/excalidraw-diagrams/create-diagram/instructions.md
index 7d64ccb1c..1da0488f5 100644
--- a/src/bmm/workflows/excalidraw-diagrams/create-diagram/instructions.md
+++ b/src/bmm/workflows/excalidraw-diagrams/create-diagram/instructions.md
@@ -132,7 +132,7 @@
   </step>
 
   <step n="10" goal="Validate Content">
-    <invoke-task>Validate against {{validation}} using {_bmad}/core/tasks/validate-workflow.xml</invoke-task>
+    <invoke-task>Validate against {{validation}} using {_bmad}/core/tasks/validate-workflow.md</invoke-task>
   </step>
 
 </workflow>
diff --git a/src/bmm/workflows/excalidraw-diagrams/create-flowchart/instructions.md b/src/bmm/workflows/excalidraw-diagrams/create-flowchart/instructions.md
index 925f2706c..0a7b4ea1f 100644
--- a/src/bmm/workflows/excalidraw-diagrams/create-flowchart/instructions.md
+++ b/src/bmm/workflows/excalidraw-diagrams/create-flowchart/instructions.md
@@ -232,7 +232,7 @@
   </step>
 
   <step n="9" goal="Validate Content">
-    <invoke-task>Validate against checklist at {{validation}} using {_bmad}/core/tasks/validate-workflow.xml</invoke-task>
+    <invoke-task>Validate against checklist at {{validation}} using {_bmad}/core/tasks/validate-workflow.md</invoke-task>
   </step>
 
 </workflow>