diff --git a/lib/platform/github/index.js b/lib/platform/github/index.js
index 53d8f1b9178237bb985f89d8f7db4a2ddd107085..00e0a6acb1b95c632dea00be0b04133d54a6d7ef 100644
--- a/lib/platform/github/index.js
+++ b/lib/platform/github/index.js
@@ -919,26 +919,21 @@ async function getPr(prNo) {
       if (config.gitAuthor) {
         // Check against gitAuthor
         logger.debug('Checking all commits');
-        try {
-          const commitAuthorEmail = (await get(
-            `repos/${config.parentRepo ||
-              config.repository}/pulls/${prNo}/commits`
-          )).body[0].commit.author.email;
-          if (commitAuthorEmail === config.gitAuthor.address) {
-            logger.debug(
-              { prNo },
-              '1 commit matches configured gitAuthor so can rebase'
-            );
-            pr.canRebase = true;
-          } else {
-            logger.debug(
-              { prNo },
-              '1 commit and not by configured gitAuthor so cannot rebase'
-            );
-            pr.canRebase = false;
-          }
-        } catch (err) {
-          logger.warn({ prNo }, 'Error checking branch commits for rebase');
+        const commitAuthorEmail = (await get(
+          `repos/${config.parentRepo ||
+            config.repository}/pulls/${prNo}/commits`
+        )).body[0].commit.author.email;
+        if (commitAuthorEmail === config.gitAuthor.address) {
+          logger.debug(
+            { prNo },
+            '1 commit matches configured gitAuthor so can rebase'
+          );
+          pr.canRebase = true;
+        } else {
+          logger.debug(
+            { prNo },
+            '1 commit and not by configured gitAuthor so cannot rebase'
+          );
           pr.canRebase = false;
         }
       } else {
diff --git a/test/platform/github/__snapshots__/index.spec.js.snap b/test/platform/github/__snapshots__/index.spec.js.snap
index 084bc8b7c776f4faf61e49b83e7956907ab03fbc..a28409a4d1927eba32681822be59a2fbbfb5e6e9 100644
--- a/test/platform/github/__snapshots__/index.spec.js.snap
+++ b/test/platform/github/__snapshots__/index.spec.js.snap
@@ -370,23 +370,6 @@ Object {
 }
 `;
 
-exports[`platform/github getPr(prNo) should return a not rebaseable PR if gitAuthor and error 1`] = `
-Object {
-  "base": Object {
-    "sha": "1234",
-  },
-  "branchName": undefined,
-  "canRebase": false,
-  "commits": 1,
-  "displayNumber": "Pull Request #1",
-  "isUnmergeable": true,
-  "mergeable_state": "dirty",
-  "number": 1,
-  "sha": undefined,
-  "state": "open",
-}
-`;
-
 exports[`platform/github getPr(prNo) should return a not rebaseable PR if gitAuthor does not match 1 commit 1`] = `
 Object {
   "base": Object {
diff --git a/test/platform/github/index.spec.js b/test/platform/github/index.spec.js
index cf17a619aedc04914780c52a7b03a6fe52992686..2e69f9a33e6bbcb7e0fb7c9905ac5247d3b7bebe 100644
--- a/test/platform/github/index.spec.js
+++ b/test/platform/github/index.spec.js
@@ -1417,40 +1417,6 @@ describe('platform/github', () => {
       expect(pr.canRebase).toBe(false);
       expect(pr).toMatchSnapshot();
     });
-    it('should return a not rebaseable PR if gitAuthor and error', async () => {
-      await initRepo({
-        repository: 'some/repo',
-        token: 'token',
-        gitAuthor: 'Renovate Bot <bot@renovateapp.com>',
-      });
-      get.mockImplementationOnce(() => ({
-        body: {
-          number: 1,
-          state: 'open',
-          mergeable_state: 'dirty',
-          base: { sha: '1234' },
-          commits: 1,
-        },
-      }));
-      get.mockImplementationOnce(() => ({
-        body: [
-          {
-            commit: {},
-          },
-        ],
-      }));
-      // getBranchCommit
-      get.mockImplementationOnce(() => ({
-        body: {
-          object: {
-            sha: '1234',
-          },
-        },
-      }));
-      const pr = await github.getPr(1234);
-      expect(pr.canRebase).toBe(false);
-      expect(pr).toMatchSnapshot();
-    });
   });
   describe('getPrFiles()', () => {
     it('should return empty if no prNo is passed', async () => {