diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c5f97be..365da5f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -121,7 +121,7 @@ jobs:
         arch: ${{ matrix.arch }}
         toolset: ${{steps.setup-php-sdk.outputs.toolset}}
     - run: phpize
-    - run: configure
+    - run: configure --with-prefix=${{steps.setup-php.outputs.prefix}}
     - run: nmake
     - run: nmake test