diff --git a/CMakeLists.txt b/CMakeLists.txt
index 036843c..b9e8241 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,27 +58,27 @@ if (${ENABLE_COVERAGE})
     list(APPEND LINKER_FLAGS gcov)
 endif ()
 
-option(BUILD_SHARED_LIBS "Build package with shared libraries." ON)
-option(ASSIMP_NO_EXPORT "Disable Assimp's export functionality." ON)
-option(ASSIMP_INSTALL "Disable this if you want to use assimp as a submodule." OFF)
-option(ASSIMP_BUILD_ZLIB "Build your own zlib" OFF)
-option(ASSIMP_BUILD_TESTS "If the test suite for Assimp is built in addition to the library." OFF)
-option(ASSIMP_WARNINGS_AS_ERRORS "Treat all warnings as errors." OFF)
-option(ASSIMP_INSTALL_PDB "Install MSVC debug files." OFF)
-option(ASSIMP_INJECT_DEBUG_POSTFIX "Inject debug postfix in .a/.so/.dll lib names" OFF)
+set(BUILD_SHARED_LIBS ON)
+set(ASSIMP_NO_EXPORT ON)
+set(ASSIMP_INSTALL OFF)
+set(ASSIMP_BUILD_ZLIB OFF)
+set(ASSIMP_BUILD_TESTS OFF)
+set(ASSIMP_WARNINGS_AS_ERRORS OFF)
+set(ASSIMP_INSTALL_PDB OFF)
+set(ASSIMP_INJECT_DEBUG_POSTFIX OFF)
 if (CMAKE_BUILD_TYPE STREQUAL "Debug")
-    option(ASSIMP_INJECT_DEBUG_POSTFIX "Inject debug postfix in .a/.so/.dll lib names" ON)
+    set(ASSIMP_INJECT_DEBUG_POSTFIX ON)
 else ()
-    option(ASSIMP_INJECT_DEBUG_POSTFIX "Inject debug postfix in .a/.so/.dll lib names" OFF)
+    set(ASSIMP_INJECT_DEBUG_POSTFIX OFF)
 endif ()
 add_subdirectory(external/assimp EXCLUDE_FROM_ALL)
 
-option(SPDLOG_ENABLE_PCH "Build static or shared library using precompiled header to speed up compilation time" ON)
-option(SPDLOG_BUILD_WARNINGS "Enable compiler warnings" ON)
-option(SPDLOG_PREVENT_CHILD_FD "Prevent from child processes to inherit log file descriptors" ON)
-option(SPDLOG_NO_THREAD_ID "prevent spdlog from querying the thread id on each log call if thread id is not needed" ON)
-option(SPDLOG_NO_TLS "prevent spdlog from using thread local storage" ON)
-option(SPDLOG_NO_ATOMIC_LEVELS "prevent spdlog from using of std::atomic log levels (use only if your code never modifies log levels concurrently" ON)
+set(SPDLOG_ENABLE_PCH ON)
+set(SPDLOG_BUILD_WARNINGS ON)
+set(SPDLOG_PREVENT_CHILD_FD ON)
+set(SPDLOG_NO_THREAD_ID ON)
+set(SPDLOG_NO_TLS ON)
+set(SPDLOG_NO_ATOMIC_LEVELS ON)
 add_subdirectory(external/spdlog EXCLUDE_FROM_ALL)
 
 add_executable(LearnGtk4 main.cpp