diff --git a/extern/libmv/CMakeLists.txt b/extern/libmv/CMakeLists.txt
index eb43285fdec..089743567f0 100644
--- a/extern/libmv/CMakeLists.txt
+++ b/extern/libmv/CMakeLists.txt
@@ -37,11 +37,6 @@ set(SRC
 	libmv-capi.h
 )
 
-if(WITH_LIBMV_WERROR)
-	ADD_CHECK_C_COMPILER_FLAG(CMAKE_C_FLAGS C_WERROR -Werror)
-	ADD_CHECK_CXX_COMPILER_FLAG(CMAKE_CXX_FLAGS C_WERROR -Werror)
-endif()
-
 if(WITH_LIBMV OR WITH_GTESTS OR (WITH_CYCLES AND WITH_CYCLES_LOGGING))
 	list(APPEND INC
 		third_party/gflags