diff --git a/custom/conf/app.example.ini b/custom/conf/app.example.ini
index 11c5d5eb0a..5069c7ec95 100644
--- a/custom/conf/app.example.ini
+++ b/custom/conf/app.example.ini
@@ -2444,7 +2444,7 @@ LEVEL = Info
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; Set the maximum number of characters in a mermaid source. (Set to -1 to disable limits)
-;MERMAID_MAX_SOURCE_CHARACTERS = 5000
+;MERMAID_MAX_SOURCE_CHARACTERS = 50000
 ;; Set the maximum number of lines allowed for a filepreview. (Set to -1 to disable limits; set to 0 to disable the feature)
 ;FILEPREVIEW_MAX_LINES = 50
 
diff --git a/modules/setting/markup.go b/modules/setting/markup.go
index 90fc86b131..4ab9e7b2d1 100644
--- a/modules/setting/markup.go
+++ b/modules/setting/markup.go
@@ -62,7 +62,7 @@ type MarkupSanitizerRule struct {
 func loadMarkupFrom(rootCfg ConfigProvider) {
 	mustMapSetting(rootCfg, "markdown", &Markdown)
 
-	MermaidMaxSourceCharacters = rootCfg.Section("markup").Key("MERMAID_MAX_SOURCE_CHARACTERS").MustInt(5000)
+	MermaidMaxSourceCharacters = rootCfg.Section("markup").Key("MERMAID_MAX_SOURCE_CHARACTERS").MustInt(50000)
 	FilePreviewMaxLines = rootCfg.Section("markup").Key("FILEPREVIEW_MAX_LINES").MustInt(50)
 	ExternalMarkupRenderers = make([]*MarkupRenderer, 0, 10)
 	ExternalSanitizerRules = make([]MarkupSanitizerRule, 0, 10)