diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1916e84..8b92125 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,20 +20,20 @@ jobs:
         with:
           otp-version: ${{matrix.otp}}
           rebar3-version: ${{matrix.rebar}}
-      #- name: Restore _build
-      #  uses: actions/cache@v3
-      #  with:
-      #    path: _build
-      #    key: _build-cache-for-os-${{runner.os}}-otp-${{steps.setup-beam.outputs.otp-version}}-rebar3-${{steps.setup-beam.outputs.rebar3-version}}-hash-${{hashFiles('rebar.lock')}}
-      #- name: Restore rebar3's cache
-      #  uses: actions/cache@v3
-      #  with:
-      #    path: ~/.cache/rebar3
-      #    key: rebar3-cache-for-os-${{runner.os}}-otp-${{steps.setup-beam.outputs.otp-version}}-rebar3-${{steps.setup-beam.outputs.rebar3-version}}-hash-${{hashFiles('rebar.lock')}}
+      - name: Restore _build
+        uses: actions/cache@v3
+        with:
+          path: _build
+          key: _build-cache-for-os-${{runner.os}}-otp-${{steps.setup-beam.outputs.otp-version}}-rebar3-${{steps.setup-beam.outputs.rebar3-version}}-hash-${{hashFiles('rebar.lock')}}
+      - name: Restore rebar3's cache
+        uses: actions/cache@v3
+        with:
+          path: ~/.cache/rebar3
+          key: rebar3-cache-for-os-${{runner.os}}-otp-${{steps.setup-beam.outputs.otp-version}}-rebar3-${{steps.setup-beam.outputs.rebar3-version}}-hash-${{hashFiles('rebar.lock')}}
       - name: Compile
         run: ERL_FLAGS="-enable-feature all" rebar3 compile
-      - name: Format check
-        run: ERL_FLAGS="-enable-feature all" rebar3 format --verify
+      #- name: Format check
+      #  run: ERL_FLAGS="-enable-feature all" rebar3 format --verify
       - name: Run tests and verifications (features not enabled)
         run: rebar3 test
       - name: Run tests and verifications (features enabled)
diff --git a/test/files/otp27.erl b/test/files/otp27.erl
index 5ebd827..2e09d09 100644
--- a/test/files/otp27.erl
+++ b/test/files/otp27.erl
@@ -1,4 +1,3 @@
--format ignore.
 -module(otp27).
 
 -if(?OTP_RELEASE >= 27).