diff --git a/.github/workflows/deploy-github-page.yml b/.github/workflows/deploy-github-page.yml
index de37e2fb..96ef855e 100644
--- a/.github/workflows/deploy-github-page.yml
+++ b/.github/workflows/deploy-github-page.yml
@@ -57,16 +57,13 @@ jobs:
 
           export PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-cpp-wasm-host 
           echo "PREFIX=$PREFIX" >> $GITHUB_ENV
-          export CMAKE_PREFIX_PATH=$PREFIX
-          export CMAKE_SYSTEM_PREFIX_PATH=$PREFIX
           export SYSROOT_PATH=$HOME/emsdk/upstream/emscripten/cache/sysroot
 
           emcmake cmake \
             -DCMAKE_BUILD_TYPE=Release                        \
-            -DCMAKE_PREFIX_PATH=$PREFIX                       \
             -DCMAKE_INSTALL_PREFIX=$PREFIX                    \
             -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
-            -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
+            -DCMAKE_FIND_ROOT_PATH=$PREFIX                    \
             -DSYSROOT_PATH=$SYSROOT_PATH                      \
             ..
           emmake make -j  ${{ env.ncpus }} install
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f92c59b7..c6f12b60 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -255,16 +255,13 @@ jobs:
 
           export PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-cpp-wasm-host 
           echo "PREFIX=$PREFIX" >> $GITHUB_ENV
-          export CMAKE_PREFIX_PATH=$PREFIX
-          export CMAKE_SYSTEM_PREFIX_PATH=$PREFIX
           export SYSROOT_PATH=$HOME/emsdk/upstream/emscripten/cache/sysroot
 
           emcmake cmake \
             -DCMAKE_BUILD_TYPE=Release                        \
-            -DCMAKE_PREFIX_PATH=$PREFIX                       \
             -DCMAKE_INSTALL_PREFIX=$PREFIX                    \
             -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
-            -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
+            -DCMAKE_FIND_ROOT_PATH=$PREFIX                    \
             -DSYSROOT_PATH=$SYSROOT_PATH                      \
             ..
           emmake make -j  ${{ env.ncpus }} install
diff --git a/README.md b/README.md
index 330c7b22..bb143784 100644
--- a/README.md
+++ b/README.md
@@ -85,16 +85,13 @@ micromamba create -f environment-wasm-host.yml --platform=emscripten-wasm32
 mkdir build
 pushd build
 export PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-cpp-wasm-host 
-export CMAKE_PREFIX_PATH=$PREFIX
-export CMAKE_SYSTEM_PREFIX_PATH=$PREFIX
 export SYSROOT_PATH=$HOME/emsdk/upstream/emscripten/cache/sysroot
 
 emcmake cmake \
         -DCMAKE_BUILD_TYPE=Release                        \
-        -DCMAKE_PREFIX_PATH=$PREFIX                       \
         -DCMAKE_INSTALL_PREFIX=$PREFIX                    \
         -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
-        -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
+        -DCMAKE_FIND_ROOT_PATH=$PREFIX                    \
         -DSYSROOT_PATH=$SYSROOT_PATH                      \
         ..
 emmake make install
diff --git a/docs/source/InstallationAndUsage.rst b/docs/source/InstallationAndUsage.rst
index 9b6ea9a5..e24cb9b4 100644
--- a/docs/source/InstallationAndUsage.rst
+++ b/docs/source/InstallationAndUsage.rst
@@ -69,15 +69,12 @@ You are now in a position to build the xeus-cpp kernel. You build it by executin
     mkdir build
     pushd build
     export PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-cpp-wasm-host 
-    export CMAKE_PREFIX_PATH=$PREFIX
-    export CMAKE_SYSTEM_PREFIX_PATH=$PREFIX
     export SYSROOT_PATH=$HOME/emsdk/upstream/emscripten/cache/sysroot
     emcmake cmake \
             -DCMAKE_BUILD_TYPE=Release                        \
-            -DCMAKE_PREFIX_PATH=$PREFIX                       \
             -DCMAKE_INSTALL_PREFIX=$PREFIX                    \
             -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
-            -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
+            -DCMAKE_FIND_ROOT_PATH=$PREFIX                    \
             -DSYSROOT_PATH=$SYSROOT_PATH                      \
             ..
     emmake make install