diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bf8a3a1..ab689da 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -56,7 +56,7 @@ jobs:
         run: coverage run -m pytest tests
 
       - name: Check test coverage
-        run: coverage report -m --fail-under=${{ (matrix.python-version == 'pypy3.10') && 99 || 100 }}
+        run: coverage report -m --fail-under=${{ (matrix.python-version == 'pypy-3.10') && 99 || 100 }}
         # pypy3.10 thinks utils.py has one uncovered branch (140 -> 133), which
         # I think is just pypy's optimizer being too smart for coverage.py.