diff --git a/__tests__/main.test.ts b/__tests__/main.test.ts
index d6a84688..551317d9 100644
--- a/__tests__/main.test.ts
+++ b/__tests__/main.test.ts
@@ -22,13 +22,16 @@ const configureInput = (
   mockInput: Partial<{
     'repo-token': string;
     'configuration-path': string;
-    'sync-labels': boolean;
-    dot: boolean;
+    'sync-labels': string;
+    dot: string;
   }>
 ) => {
   jest
     .spyOn(core, 'getInput')
     .mockImplementation((name: string, ...opts) => mockInput[name]);
+  jest
+    .spyOn(core, 'getBooleanInput')
+    .mockImplementation((name: string, ...opts) => mockInput[name] === 'true');
 };
 
 afterAll(() => jest.restoreAllMocks());
@@ -52,7 +55,7 @@ describe('run', () => {
   });
 
   it('(with dot: true) adds labels to PRs that match our glob patterns', async () => {
-    configureInput({dot: true});
+    configureInput({dot: 'true'});
     usingLabelerConfigYaml('only_pdfs.yml');
     mockGitHubResponseChangedFiles('.foo.pdf');
 
@@ -80,7 +83,7 @@ describe('run', () => {
   });
 
   it('(with dot: true) does not add labels to PRs that do not match our glob patterns', async () => {
-    configureInput({dot: true});
+    configureInput({dot: 'true'});
     usingLabelerConfigYaml('only_pdfs.yml');
     mockGitHubResponseChangedFiles('foo.txt');
 
@@ -91,20 +94,11 @@ describe('run', () => {
   });
 
   it('(with sync-labels: true) it deletes preexisting PR labels that no longer match the glob pattern', async () => {
-    const mockInput = {
+    configureInput({
       'repo-token': 'foo',
       'configuration-path': 'bar',
       'sync-labels': 'true'
-    };
-
-    jest
-      .spyOn(core, 'getInput')
-      .mockImplementation((name: string, ...opts) => mockInput[name]);
-    jest
-      .spyOn(core, 'getBooleanInput')
-      .mockImplementation(
-        (name: string, ...opts) => mockInput[name] === 'true'
-      );
+    });
 
     usingLabelerConfigYaml('only_pdfs.yml');
     mockGitHubResponseChangedFiles('foo.txt');
@@ -127,20 +121,11 @@ describe('run', () => {
   });
 
   it('(with sync-labels: false) it issues no delete calls even when there are preexisting PR labels that no longer match the glob pattern', async () => {
-    const mockInput = {
+    configureInput({
       'repo-token': 'foo',
       'configuration-path': 'bar',
       'sync-labels': 'false'
-    };
-
-    jest
-      .spyOn(core, 'getInput')
-      .mockImplementation((name: string, ...opts) => mockInput[name]);
-    jest
-      .spyOn(core, 'getBooleanInput')
-      .mockImplementation(
-        (name: string, ...opts) => mockInput[name] === 'true'
-      );
+    });
 
     usingLabelerConfigYaml('only_pdfs.yml');
     mockGitHubResponseChangedFiles('foo.txt');
diff --git a/dist/index.js b/dist/index.js
index ae651d96..7087f8e2 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -50,7 +50,7 @@ function run() {
             const token = core.getInput('repo-token');
             const configPath = core.getInput('configuration-path', { required: true });
             const syncLabels = core.getBooleanInput('sync-labels');
-            const dot = !!core.getInput('dot', { required: false });
+            const dot = !!core.getBooleanInput('dot', { required: false });
             const prNumber = getPrNumber();
             if (!prNumber) {
                 core.info('Could not get pull request number from context, exiting');
diff --git a/src/labeler.ts b/src/labeler.ts
index a996fc31..4fb70fb6 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.getBooleanInput('sync-labels');
-    const dot = !!core.getInput('dot', {required: false});
+    const dot = !!core.getBooleanInput('dot', {required: false});
 
     const prNumber = getPrNumber();
     if (!prNumber) {