diff --git a/common/space_lua/stdlib/string.ts b/common/space_lua/stdlib/string.ts
index c67cb6d8..003d40cb 100644
--- a/common/space_lua/stdlib/string.ts
+++ b/common/space_lua/stdlib/string.ts
@@ -39,6 +39,7 @@ function translatePattern(pattern: string): string {
 
   // Replace single backslash with double backslashes
   pattern = pattern.replace(new RegExp("\\\\", "g"), "\\\\");
+  pattern = pattern.replace(new RegExp("\\|", "g"), "\\|");
 
   for (const [key, value] of Object.entries(ROSETTA_STONE)) {
     pattern = pattern.replace(new RegExp(key, "g"), value);
@@ -138,7 +139,7 @@ export const stringApi = new LuaTable({
       repl: any, // string or LuaFunction
       n = Infinity,
     ) => {
-      pattern = translatePattern("" + pattern);
+      pattern = translatePattern(pattern);
       const replIsFunction = repl.call;
 
       let count = 0,
diff --git a/common/space_lua/stdlib/string_test.lua b/common/space_lua/stdlib/string_test.lua
index b932d609..1e8de795 100644
--- a/common/space_lua/stdlib/string_test.lua
+++ b/common/space_lua/stdlib/string_test.lua
@@ -32,6 +32,15 @@ local result, count = string.gsub("hello world", "hello", "hi")
 assert(result == "hi world", "Basic string replacement failed")
 assert(count == 1, "Basic replacement count failed")
 
+-- https://github.com/silverbulletmd/silverbullet/issues/1326
+result, count = ("abc|de"):gsub("|", "-")
+assert(result == "abc-de", "replacements failed [got: " .. result .. ", expected: abc-de]")
+assert(count == 1, "replacement count failed")
+
+result, count = ("abc\\|de|"):gsub("|", "-")
+assert(result == "abc\\-de-", "replacements failed [got: " .. result .. ", expected: abc\\-de-]")
+assert(count == 2, "replacement count failed")
+
 -- Multiple replacements
 result, count = string.gsub("hello hello hello", "hello", "hi")
 assert(result == "hi hi hi", "Multiple replacements failed")