diff --git a/source/outputs/implementations/markdown.ts b/source/outputs/implementations/markdown.ts
index 6a4938f..d6ebdbd 100644
--- a/source/outputs/implementations/markdown.ts
+++ b/source/outputs/implementations/markdown.ts
@@ -154,6 +154,9 @@ class type_output_markdown implements type_output<string>
 											}
 										),
 									)
+									.map(
+										x => x.replace(new RegExp("\\\|","g"), "\\\|")
+									)
 									.join(" | ")
 								),
 							}
@@ -186,6 +189,9 @@ class type_output_markdown implements type_output<string>
 													}
 												),
 											)
+											.map(
+												x => x.replace(new RegExp("\\\|","g"), "\\\|")
+											)
 											.join(" | ")
 										),
 									}