diff --git a/server/gameserver/CMakeLists.txt b/server/gameserver/CMakeLists.txt
index 1dc569cd..ef418d7a 100644
--- a/server/gameserver/CMakeLists.txt
+++ b/server/gameserver/CMakeLists.txt
@@ -15,7 +15,11 @@ set(LIB_DIR "ubuntu20.04_g++-9")
 message(LIB_DIR: ${LIB_DIR} )
 
 set(CMAKE_CXX_FLAGS_RELEASE "-O3 -Wall -g -std=gnu++1z -DGAME_ID=${GAME_ID} -DNDEBUG -DMAP3D -DDT_VIRTUAL_QUERYFILTER -DNEW_WEAPON_SYS=1")
-set(CMAKE_CXX_FLAGS_DEBUG "-Wall -g -std=gnu++1z -DGAME_ID=${GAME_ID} -DDEBUG -DCXY -DSXY -DMAP3D -DDT_VIRTUAL_QUERYFILTER -DNEW_WEAPON_SYS=1 -fsanitize=address -fno-omit-frame-pointer")
+if (${ASAN})
+  set(CMAKE_CXX_FLAGS_DEBUG "-Wall -g -std=gnu++1z -DGAME_ID=${GAME_ID} -DDEBUG -DCXY -DSXY -DMAP3D -DDT_VIRTUAL_QUERYFILTER -DNEW_WEAPON_SYS=1 -fsanitize=address -fno-omit-frame-pointer")
+else()
+  set(CMAKE_CXX_FLAGS_DEBUG "-Wall -g -std=gnu++1z -DGAME_ID=${GAME_ID} -DDEBUG -DCXY -DSXY -DMAP3D -DDT_VIRTUAL_QUERYFILTER -DNEW_WEAPON_SYS=1")
+endif()
 
 include_directories(
   AFTER