diff --git a/test/platform/git/__snapshots__/storage.spec.ts.snap b/test/platform/git/__snapshots__/storage.spec.ts.snap
index 3a6b63d7697c23ad6088574a1073640d8d1f4260..0017cdca097ce96a730db4c217645225aa8101b5 100644
--- a/test/platform/git/__snapshots__/storage.spec.ts.snap
+++ b/test/platform/git/__snapshots__/storage.spec.ts.snap
@@ -44,9 +44,4 @@ Array [
 
 exports[`platform/git/storage isBranchStale() should throw if branch does not exist 1`] = `[Error: Cannot check staleness for branch that does not exist]`;
 
-exports[`platform/git/storage mergeBranch(branchName) should throw if branch merge throws 1`] = `
-[Error: fatal: 'origin/not_found' is not a commit and a branch 'not_found' cannot be created from it
-]
-`;
-
 exports[`platform/git/storage setBaseBranch(branchName) should throw if branch does not exist 1`] = `[Error: Cannot set baseBranch to something that does not exist]`;
diff --git a/test/platform/git/storage.spec.ts b/test/platform/git/storage.spec.ts
index f3a93851e601ac18cb06999766b4450e671e4c47..975c935c9b9a0b513216ffefb612c466325d66eb 100644
--- a/test/platform/git/storage.spec.ts
+++ b/test/platform/git/storage.spec.ts
@@ -147,7 +147,7 @@ describe('platform/git/storage', () => {
       expect(merged.all).toContain('renovate/future_branch');
     });
     it('should throw if branch merge throws', async () => {
-      await expect(git.mergeBranch('not_found')).rejects.toMatchSnapshot();
+      await expect(git.mergeBranch('not_found')).rejects.toThrow();
     });
   });
   describe('deleteBranch(branchName)', () => {