diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index a7f92c0672..8d7003b467 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -3,6 +3,11 @@
 # This file is part of LAMMPS
 # Created by Christoph Junghans and Richard Berger
 cmake_minimum_required(VERSION 3.10)
+# set policy to silence warnings about ignoring <PackageName>_ROOT but use it
+if(POLICY CMP0074)
+  cmake_policy(SET CMP0074 NEW)
+endif()
+########################################
 
 project(lammps CXX)
 set(SOVERSION 0)
diff --git a/cmake/Modules/FindTBB_MALLOC.cmake b/cmake/Modules/FindTBB_MALLOC.cmake
index f837932ba8..d34b946ad3 100644
--- a/cmake/Modules/FindTBB_MALLOC.cmake
+++ b/cmake/Modules/FindTBB_MALLOC.cmake
@@ -6,10 +6,6 @@
 #  TBB_MALLOC_FOUND        - True if tbb found.
 #
 
-# silence warning about ignoring <PackageName>_ROOT and use it.
-if(POLICY CMP0074)
-  cmake_policy(SET CMP0074 NEW)
-endif()
 ########################################################
 # TBB Malloc
 
diff --git a/cmake/Modules/Packages/USER-H5MD.cmake b/cmake/Modules/Packages/USER-H5MD.cmake
index 274c0914e2..4fcae93027 100644
--- a/cmake/Modules/Packages/USER-H5MD.cmake
+++ b/cmake/Modules/Packages/USER-H5MD.cmake
@@ -1,10 +1,5 @@
 enable_language(C)
 
-# silence warning about ignoring <PackageName>_ROOT and use it.
-if(POLICY CMP0074)
-  cmake_policy(SET CMP0074 NEW)
-endif()
-
 find_package(HDF5 REQUIRED)
 target_link_libraries(h5md PRIVATE ${HDF5_LIBRARIES})
 target_include_directories(h5md PUBLIC ${HDF5_INCLUDE_DIRS})
diff --git a/cmake/Modules/Packages/USER-NETCDF.cmake b/cmake/Modules/Packages/USER-NETCDF.cmake
index 36c5a06385..d63e9773c3 100644
--- a/cmake/Modules/Packages/USER-NETCDF.cmake
+++ b/cmake/Modules/Packages/USER-NETCDF.cmake
@@ -1,11 +1,6 @@
 # USER-NETCDF can use NetCDF, Parallel NetCDF (PNetCDF), or both. At least one necessary.
 # NetCDF library enables dump style "netcdf", while PNetCDF enables dump style "netcdf/mpiio"
 
-# silence warning about ignoring <PackageName>_ROOT and use it.
-if(POLICY CMP0074)
-  cmake_policy(SET CMP0074 NEW)
-endif()
-
 # may use NetCDF or PNetCDF with MPI, but must have NetCDF without
 if(NOT BUILD_MPI)
   find_package(NetCDF REQUIRED)