diff --git a/doc/Install_develop.rst b/doc/Install_develop.rst
index 5aa5c8a6c9af7d33a2b11f54af60f7c9c5bd8fa2..67618dc45457e87a1d0fb15b509b97cb4eca8ce2 100644
--- a/doc/Install_develop.rst
+++ b/doc/Install_develop.rst
@@ -180,15 +180,15 @@ Build
 For the tests the build type has to be Debug. As a shorthand you can run ``make
 test``. If you want to build manually, follow these steps:
 
-1. ``conan install . -s build_type=Debug``
-2. ``cd build/Debug``
-3. ``cmake -B . -D CMAKE_BUILD_TYPE=Debug ..``
+1. ``conan install . -s build_type=Debug --build=missing``
+2. ``cd build/Debug`` 
+3. ``cmake -S ../.. -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=generators/conan_toolchain.cmake  -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Debug``
     - If your clang-format version is too old, formatting, linting etc. can
       be skipped:
       ``cmake -B . -D CMAKE_BUILD_TYPE=Debug -D SKIP_LINTING=ON ..``
     - Depending on the clang version it may be necessary to also add
       ``-DCMAKE_CXX_FLAGS="-Wno-unused-parameter"``
-4. ``cmake --build .``
+5. ``cmake --build . ``
     - If this fails with ``Error running '': No such file or directory``, you may want to try
       CMake's ``-D SKIP_LINTING=ON``. (See previous step.)