diff --git a/CMakeLists.txt b/CMakeLists.txt
index f99bfc83..dcc54309 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -80,12 +80,10 @@ target_link_libraries(spdlog_header_only INTERFACE Threads::Threads)
 #---------------------------------------------------------------------------------------
 if(SPDLOG_MASTER_PROJECT)
     if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang|AppleClang")
-        target_compile_options( spdlog PUBLIC -Wall -Wextra -Wconversion -pedantic -Wfatal-errors)
-        target_compile_options( spdlog_header_only INTERFACE -Wall -Wextra -Wconversion -pedantic -Wfatal-errors)
+        target_compile_options( spdlog PRIVATE -Wall -Wextra -Wconversion -pedantic -Wfatal-errors)
     endif()
     if (CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
-        target_compile_options( spdlog PUBLIC /W3 /WX )
-        target_compile_options( spdlog_header_only INTERFACE /W3 /WX)
+        target_compile_options( spdlog PRIVATE /W3 /WX )
     endif()
 
     include(cmake/sanitizers.cmake)
@@ -162,4 +160,4 @@ if (SPDLOG_INSTALL)
     #---------------------------------------------------------------------------------------
     include(cmake/spdlogCPack.cmake)
 
-endif ()
\ No newline at end of file
+endif ()