diff --git a/coordinator/gscoordinator/template/CMakeLists.template b/coordinator/gscoordinator/template/CMakeLists.template
index 0f0516bd0ba7..cc4b2cb12036 100644
--- a/coordinator/gscoordinator/template/CMakeLists.template
+++ b/coordinator/gscoordinator/template/CMakeLists.template
@@ -71,7 +71,7 @@ else()
     set(CMAKE_CXX_STANDARD 14)
 endif()
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -O0 -g")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -O3 -g")
 if (APPLE)
     set(CMAKE_MACOSX_RPATH ON)
 else ()