diff --git a/.github/workflows/cpp_ci.yml b/.github/workflows/cpp_ci.yml
index bd19bc8..cca33bc 100644
--- a/.github/workflows/cpp_ci.yml
+++ b/.github/workflows/cpp_ci.yml
@@ -13,12 +13,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    #- name: downloading and install fftw
-    #  run: wget http://www.fftw.org/fftw-3.3.10.tar.gz && tar xzf fftw-3.3.10.tar.gz && cd fftw-3.3.10 && ./configure && make && sudo make install
+    - name: downloading and install fftw
+      run: wget http://www.fftw.org/fftw-3.3.10.tar.gz && tar xzf fftw-3.3.10.tar.gz && cd fftw-3.3.10 && ./configure && make && sudo make install
     - name: load submodules
       run: git submodule update --init
-    - name: debug
-      run: ls && cd build && ls
     - name: cmake
       run: mkdir build && export MKPATH="${PWD}" && cd build && echo "${MKPATH}" && cmake "${MKPATH}"
     - name: make