diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e50d12a..54bbec4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,6 +8,7 @@ env:
   CMAKE_INSTALL_PREFIX: ~/local
   CMAKE_PREFIX_PATH: ~/local
   CMAKE_GENERATOR: Ninja
+  CMAKE_TLS_VERIFY: true
 
 on:
   push:
diff --git a/.github/workflows/ci_build.yml b/.github/workflows/ci_build.yml
index fa755ee..689af4e 100644
--- a/.github/workflows/ci_build.yml
+++ b/.github/workflows/ci_build.yml
@@ -6,6 +6,7 @@ env:
   CTEST_PARALLEL_LEVEL: 0
   CMAKE_INSTALL_PREFIX: ~/libs
   CMAKE_PREFIX_PATH: ~/libs
+  CMAKE_TLS_VERIFY: true
 
 on:
   push:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e80cd94..6982e56 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -118,7 +118,6 @@ set(FETCHCONTENT_QUIET no)
 FetchContent_Populate(${PROJECT_NAME}
 SOURCE_DIR ${PROJECT_SOURCE_DIR}/mumps/${MUMPS_UPSTREAM_VERSION}
 URL ${url}
-TLS_VERIFY ${CMAKE_TLS_VERIFY}
 )
 
 message(VERBOSE "MUMPS ${MUMPS_UPSTREAM_VERSION} source directory: ${mumps_SOURCE_DIR}")
diff --git a/cmake/scalapack.cmake b/cmake/scalapack.cmake
index f4d1a70..cfc1b03 100644
--- a/cmake/scalapack.cmake
+++ b/cmake/scalapack.cmake
@@ -42,7 +42,6 @@ set(scalapack_cmake_args
 -DCMAKE_Fortran_COMPILER:PATH=${CMAKE_Fortran_COMPILER}
 -DBUILD_TESTING:BOOL=off
 -DCMAKE_BUILD_TYPE:STRING=Release
--DCMAKE_TLS_VERIFY:BOOL=${CMAKE_TLS_VERIFY}
 )
 
 file(READ ${CMAKE_CURRENT_LIST_DIR}/libraries.json json)
diff --git a/options.cmake b/options.cmake
index ffea9f3..91c1083 100644
--- a/options.cmake
+++ b/options.cmake
@@ -1,13 +1,4 @@
-if(CMAKE_VERSION VERSION_LESS 3.21)
-  get_property(not_top DIRECTORY PROPERTY PARENT_DIRECTORY)
-  if(not_top)
-    set(${PROJECT_NAME}_IS_TOP_LEVEL false)
-  else()
-    set(${PROJECT_NAME}_IS_TOP_LEVEL true)
-  endif()
-endif()
-
-option(${PROJECT_NAME}_BUILD_TESTING "Build tests" ${${PROJECT_NAME}_IS_TOP_LEVEL})
+option(MUMPS_BUILD_TESTING "Build tests" ${MUMPS_IS_TOP_LEVEL})
 
 option(find_static "Find static libraries for Lapack and Scalapack (default shared then static search)")
 
@@ -54,13 +45,11 @@ option(BUILD_COMPLEX16 "Build double precision complex")
 
 # --- other options
 
-option(CMAKE_TLS_VERIFY "Verify TLS certificates" ON)
-
 set_property(DIRECTORY PROPERTY EP_UPDATE_DISCONNECTED true)
 
 set(FETCHCONTENT_UPDATES_DISCONNECTED true)
 
 # this is for convenience of those needing scalapaack, lapack built
-if(${${PROJECT_NAME}_IS_TOP_LEVEL} AND CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+if(MUMPS_IS_TOP_LEVEL AND CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
   set_property(CACHE CMAKE_INSTALL_PREFIX PROPERTY VALUE "${PROJECT_BINARY_DIR}/local")
 endif()
diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
index 90bfe85..85e4479 100644
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -19,8 +19,6 @@ option(BUILD_COMPLEX "Build single precision complex")
 option(BUILD_COMPLEX16 "Build double precision complex")
 option(intsize64 "use 64-bit integers in C and Fortran--Scotch must be consistent with MUMPS")
 
-option(CMAKE_TLS_VERIFY "Verify TLS certificates when downloading" ON)
-
 set_property(DIRECTORY PROPERTY EP_UPDATE_DISCONNECTED true)
 
 file(READ ${CMAKE_CURRENT_SOURCE_DIR}/../cmake/libraries.json json)