diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 180a1f4..735b765 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -70,10 +70,10 @@ jobs:
           rem # Run the tests
           cd test
           if "${{ matrix.vim_type }}"=="Neovim" (
-            nmake -f Make_win.mak VIMPROG=${{ steps.vim.outputs.executable }} NO_PLUGINS=--noplugin
-          ) else (
-            nmake -f Make_win.mak VIMPROG=${{ steps.vim.outputs.executable }}
+            rem # Neovim doesn't support the --not-a-term option.
+            set NO_PLUGINS=--noplugin
           )
+          nmake -f Make_win.mak VIMPROG=${{ steps.vim.outputs.executable }}
 
       - name: 'Run test (Unix)'
         if: ${{ !startsWith(matrix.os, 'windows') }}
@@ -85,9 +85,9 @@ jobs:
           # Run the tests
           cd test
           if [ '${{ matrix.vim_type }}' = 'Neovim' ]; then
-            make VIMPROG=${{ steps.vim.outputs.executable }} NO_PLUGINS='--noplugin'
-          else
-            make VIMPROG=${{ steps.vim.outputs.executable }}
+            # Neovim doesn't support the --not-a-term option.
+            export NO_PLUGINS='--noplugin'
           fi
+          make VIMPROG=${{ steps.vim.outputs.executable }}
 
 # vim: sw=2 sts=2 et