Index: src/external/rawspeed/cmake/compiler-flags.cmake
--- src/external/rawspeed/cmake/compiler-flags.cmake.orig
+++ src/external/rawspeed/cmake/compiler-flags.cmake
@@ -214,8 +214,6 @@ MARK_AS_ADVANCED(
     CMAKE_SHARED_LINKER_FLAGS_TSAN
     CMAKE_SHARED_MODULE_FLAGS_TSAN )
 
-set(CMAKE_C_FLAGS_RELEASEWITHASSERTS "${CMAKE_C_FLAGS_RELEASEWITHASSERTS} -O3")
-set(CMAKE_CXX_FLAGS_RELEASEWITHASSERTS "${CMAKE_CXX_FLAGS_RELEASEWITHASSERTS} -O3")
 
 set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3")
 set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
