diff --git a/__tests__/main.test.ts b/__tests__/main.test.ts
index 7aaf87d4..c4b77bc9 100644
--- a/__tests__/main.test.ts
+++ b/__tests__/main.test.ts
@@ -29,6 +29,9 @@ const configureInput = (
   jest
     .spyOn(core, 'getInput')
     .mockImplementation((name: string, ...opts) => mockInput[name]);
+  jest
+    .spyOn(core, 'getBooleanInput')
+    .mockImplementation((name: string, ...opts) => mockInput[name]);
 };
 
 afterAll(() => jest.restoreAllMocks());
diff --git a/src/labeler.ts b/src/labeler.ts
index 592959f0..6331857c 100644
--- a/src/labeler.ts
+++ b/src/labeler.ts
@@ -16,7 +16,7 @@ export async function run() {
     const token = core.getInput('repo-token');
     const configPath = core.getInput('configuration-path', {required: true});
     const syncLabels = !!core.getInput('sync-labels');
-    const dot = !!core.getInput('dot');
+    const dot = core.getBooleanInput('dot');
 
     const prNumber = getPrNumber();
     if (!prNumber) {