diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8bd68cb10..ca9e71f68 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -87,7 +87,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Install libraries
-      if: env.TOXENV == 'pypy3'
+      if: matrix.env.TOXENV == 'pypy3'
       run: apt-get update && apt-get install libxml2-dev libxslt-dev
 
     - name: Run check