diff --git a/CMakeLists.txt b/CMakeLists.txt
index a5a5d0f1e..9bb431bf0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,7 +21,7 @@ endif()
 
 # Compiler flags
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D__STDC_FORMAT_MACROS -std=gnu++11")
 
 # Tests
 if(BUILD_TESTS)