diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0aa1b64..54e7b3d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -295,7 +295,7 @@ message(STATUS "Wrote ${PROJECT_BINARY_DIR}/config.h")
 configure_file(${PROJECT_SOURCE_DIR}/cmake/json_config.h.in   ${PROJECT_BINARY_DIR}/json_config.h)
 message(STATUS "Wrote ${PROJECT_BINARY_DIR}/json_config.h")
 
-if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
+if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" AND NOT MSVC)
     set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} -ffunction-sections -fdata-sections")
 	if ("${DISABLE_WERROR}" STREQUAL "OFF")
 	    set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} -Werror")
@@ -316,7 +316,7 @@ if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL
         # Remove this for 1.0 when we can bump the ABI and actually fix these warnings.
         set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} -Wno-shorten-64-to-32")
     endif()
-elseif ("${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC")
+elseif (MSVC)
     set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} /DEBUG")
     set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} /wd4100")
     set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} /wd4996")