diff --git a/CMakeLists.txt b/CMakeLists.txt
index ff4a55a..72bde6f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,9 +13,6 @@ set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
-set(CMAKE_C_STANDARD 11)
-set(CMAKE_C_STANDARD_REQUIRED ON)
-
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
 option(TILE_BUILD_TESTS "Build tests" OFF)
@@ -70,7 +67,6 @@ add_subdirectory("third_party/context")
 add_subdirectory("third_party/zlib")
 add_subdirectory("third_party/fmt")
 add_subdirectory("third_party/googletest")
-set(INTTYPES_FORMAT "C99")
 add_subdirectory("third_party/gflags")
 set(GFLAGS_USE_TARGET_NAMESPACE ON)
 set(gflags_DIR "${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags")