diff --git a/intern/cycles/CMakeLists.txt b/intern/cycles/CMakeLists.txt
index f22688f..c32aad1 100644
--- a/intern/cycles/CMakeLists.txt
+++ b/intern/cycles/CMakeLists.txt
@@ -227,8 +227,6 @@ endif()
 
 # Warnings
 if(CMAKE_COMPILER_IS_GNUCXX)
-  ADD_CHECK_CXX_COMPILER_FLAG(CMAKE_CXX_FLAGS _has_cxxflag_float_conversion "-Werror=float-conversion")
-  ADD_CHECK_CXX_COMPILER_FLAG(CMAKE_CXX_FLAGS _has_cxxflag_double_promotion "-Werror=double-promotion")
   ADD_CHECK_CXX_COMPILER_FLAG(CMAKE_CXX_FLAGS _has_no_error_unused_macros "-Wno-error=unused-macros")
   unset(_has_cxxflag_float_conversion)
   unset(_has_cxxflag_double_promotion)