diff --git a/CMakeLists.txt b/CMakeLists.txt
index a6e428b..647e636 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,9 +29,6 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 
 include(debug_flags)
 
-# Disable debug log.
-if(NOT ${CMAKE_BUILD_TYPE} STREQUAL "Debug")
-  add_definitions("-DNDEBUG")
 endif()
 
 add_subdirectory(src)