diff --git a/src/llvm_backend.hpp b/src/llvm_backend.hpp
index 4a78ca3a9..73e125f41 100644
--- a/src/llvm_backend.hpp
+++ b/src/llvm_backend.hpp
@@ -120,6 +120,7 @@ typedef Slice<i32> lbStructFieldRemapping;
 enum lbFunctionPassManagerKind {
 	lbFunctionPassManager_default,
 	lbFunctionPassManager_default_without_memcpy,
+	lbFunctionPassManager_none,
 	lbFunctionPassManager_minimal,
 	lbFunctionPassManager_size,
 	lbFunctionPassManager_speed,