diff --git a/docs/syntax/flowchart.md b/docs/syntax/flowchart.md
index 7daf7ca2b..fdd74309a 100644
--- a/docs/syntax/flowchart.md
+++ b/docs/syntax/flowchart.md
@@ -1600,6 +1600,7 @@ flowchart LR
 The "Markdown Strings" feature enhances flowcharts and mind maps by offering a more versatile string type, which supports text formatting options such as bold and italics, and automatically wraps text within labels.
 
 ```mermaid-example
+---
 config:
   flowchart:
     htmlLabels: false
@@ -1616,6 +1617,7 @@ end
 ```
 
 ```mermaid
+---
 config:
   flowchart:
     htmlLabels: false
diff --git a/packages/mermaid/src/docs/syntax/flowchart.md b/packages/mermaid/src/docs/syntax/flowchart.md
index cea326b37..c643a298a 100644
--- a/packages/mermaid/src/docs/syntax/flowchart.md
+++ b/packages/mermaid/src/docs/syntax/flowchart.md
@@ -980,6 +980,7 @@ flowchart LR
 The "Markdown Strings" feature enhances flowcharts and mind maps by offering a more versatile string type, which supports text formatting options such as bold and italics, and automatically wraps text within labels.
 
 ```mermaid-example
+---
 config:
   flowchart:
     htmlLabels: false