diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 026d345..be73cd7 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -41,7 +41,7 @@ jobs:
 
     - uses: actions/checkout@v2
     - name: ci-nighly
-      if: ${{ !(matrix.rust == '1.57.0' || matrix.rust == "1.64.0") }}
+      if: ${{ matrix.rust != '1.57.0' && matrix.rust != "1.64.0") }}
       run: |
         rustup override set ${{ matrix.rust }}