diff --git a/src/core/internal.ts b/src/core/internal.ts
index 1f9bc87a..26a0b8c5 100644
--- a/src/core/internal.ts
+++ b/src/core/internal.ts
@@ -154,7 +154,7 @@ export function createInput<
     and: Object.assign((...inputs: InputSource[]) => createInput(`${s}${exactly(...inputs)}`), {
       referenceTo: (groupName: string) => createInput(`${s}\\k<${groupName}>`),
     }),
-    or: (...inputs) => createInput(`(?:${s}|${exactly(...inputs)})`),
+    or: (...inputs) => createInput(`(?:${s}|${inputs.map(v => exactly(v)).join('|')})`),
     after: (...input) => createInput(`(?<=${exactly(...input)})${s}`),
     before: (...input) => createInput(`${s}(?=${exactly(...input)})`),
     notAfter: (...input) => createInput(`(?<!${exactly(...input)})${s}`),
diff --git a/test/inputs.test.ts b/test/inputs.test.ts
index 52288579..657ff83d 100644
--- a/test/inputs.test.ts
+++ b/test/inputs.test.ts
@@ -255,7 +255,7 @@ describe('chained inputs', () => {
     const multi = multichar.or('foo', input.groupedAs('groupName'), exactly('bar').or(test))
     const regexp2 = new RegExp(multi as any)
     expect(regexp2).toMatchInlineSnapshot(
-      '/\\(\\?:ab\\|foo\\(\\?<groupName>\\\\\\?\\)\\(\\?:bar\\|test\\\\\\.js\\)\\)/',
+      '/\\(\\?:ab\\|foo\\|\\(\\?<groupName>\\\\\\?\\)\\|\\(\\?:bar\\|test\\\\\\.js\\)\\)/',
     )
     expectTypeOf(
       extractRegExp(multi),