diff --git a/CMakeLists.txt b/CMakeLists.txt
index 05089de..21f15d4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -114,7 +114,7 @@ endif()
 
 if (PHMAP_BUILD_EXAMPLES)
     if(NOT MSVC)
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wall -Wextra -Wcast-align -Wcast-qual -Wdisabled-optimization -Wformat=12 -Winit-self -Wlogical-op -Wmissing-include-dirs -Woverloaded-virtual -Wredundant-decls -Wshadow -Wstrict-null-sentinel  -Wswitch-default -Wno-unused")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wall -Wextra -Wcast-align -Wcast-qual -Wdisabled-optimization -Winit-self -Wlogical-op -Wmissing-include-dirs -Woverloaded-virtual -Wredundant-decls -Wshadow -Wstrict-null-sentinel  -Wswitch-default -Wno-unused")
     endif()
 
     set(THREADS_PREFER_PTHREAD_FLAG ON)