diff --git a/python/CMakeLists.txt b/python/CMakeLists.txt
index 3c634b9f2..bbe3037cf 100644
--- a/python/CMakeLists.txt
+++ b/python/CMakeLists.txt
@@ -30,7 +30,7 @@ if (UNIX)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -fPIC")
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
   if (NOT ${U_CMAKE_BUILD_TYPE} MATCHES DEBUG)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden -flto")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden")
   endif()
 endif()